The way I've structured the information is to compare a cabinet saw equipped with an aftermarket sliding table to two different Euro saws.  The two saws were selected because they represent two ends of the spectrum in Euro design.  The Rojek is one of the most similar (and price competitive) full Euro machines when compared to a cabinet saw (the Laguna TS would also fit this description somewhat).  The Hammer is representative of higher end Euro machines (it isn't really high-end but it follows the form of them).

If one were considering the purchase of any Euro saw the best way I found to analyze this is to do a feature comparison to understand the benefits and trade offs and then to look at the saw as a complete system.

An example of this would be:
"What do I get in return for giving up the dado capability of the Hammer?"
Specific to the blade issue you get (1) soft start, (2) blade braking, and (3) an easy to change blade. 

Only the buyer can determine if this trade off is acceptable or worthwhile; if it would help, the individual areas below could be scored in an attempt to place a "value to the buyer" upon them.

3 1/8" with 10" blade

2 3/4" with 10" blade
3.8" with 12" blade
4" with 12.4" blade

2 3/4" with 10" blade
3.8" with 12" blade

50" - 52"

49"

52"

Excellent

Poor

Adequate

The "L" type rip fence standard on the Hammer is particularly lame.  To add insult to injury there are no aftermarket fence systems that will fit onto a Hammer without some modification.  While the Rojek is at least useable in its unmodified state it is still inferior to American fence systems.  Unlike the Hammer, many of the American fence systems would fit onto the Rojek with little or no modification.  This is an area where Europe seems to lack generally when compared to rip fences from these shores.

Not Really

Optional

Common

The scoring system used by Euro saws is adjusted via three Allen bolts accessed via the saw top.  The scoring blade can be raised or kept below table as desired.  The scoring blades on these two Euro machines must be removed if a main blade larger than 10" is used.  A scoring blade is especially useful when working with Melamine or veneered plywood that is prone to chip-out.

Yes

No

Yes

The common Euro response when it comes to the "dado question" is that they are illegal in Europe and there are other (inference = better) ways of performing the same operation.  In reality this is at best a lame excuse, the dado blade is a very good way of making grooves, if it weren't, they wouldn't be popular.  Although molding heads have lost much of their popularity due to inexpensive router bits, they are still a cost effective method of producing molding.

If one has a saw that cannot accept a dado set like the Hammer, it is a loss in capability that will need to be overcome through some other means.

Aftermarket Excaliber

Integral Format

Integrated CV2

The closer the guide bar and bearings are to the blade the greater the linear accuracy, performance, and alignment / installation will be.  The Excaliber system has its bearing components over 24" away from the blade.  A sliding table like the Excaliber would provide a lot of support for sheet goods but due to its supporting legs it could easily be thrown out of alignment (if hit) and it takes up quite a bit of space statically.

The K3 uses a telescopic sliding table mechanism similar to a full extension drawer glide.  This allows it to be fairly small statically. The 78" table on a K3 occupies a footprint of 10.2 square feet. A 60" stroke Excaliber is about 23 square feet.  The K3 sliding table outrigger can be easily detached and re-attached onto the sliding table wagon. With it removed, the static size of the machine is reduced even further yet there is still 12" or so of sliding table surface available.  The K3 also has a T-slot in the sliding table that can be used to attach jigs or hold-downs for special setups; this effectively converts the entire sliding table into a precision jig base.  Because of it's closeness to the blade, a Format slider can also be use to make rip cuts adding to its versatility.

The Rojek slider is integrated into the design of the machine; unlike an aftermarket accessory it isn't a kludged on afterthought.  The Rojek slider takes up more room than a telescopic type but it is still quite a bit smaller than the Excaliber.  It's guide bearings are close to the blade which should give it good accuracy.  The crosscut fence of the Rojek is less versatile (useful) than the Excaliber.  While the Rojek table does slide close to the blade, because it isn't a Format type it could not be used very effectively as a jig base or for ripping.

Not Really

Good

Good

Poor

Good

Mediocre guard, good riving knife

The guards on the Euro saws do not offer much protection but do provide effective dust collection ports.  The Hammer guard is smaller and made of clear plastic which makes it preferable over the Rojek.

Loud

Poor

27.3'

23.2'

~24'

One dealer, one location

Delivery for a typical cabinet saw is not a problem at all compared to a large machine like the Hammer.  The amount of effort one goes through to get a Euro machine depends greatly upon the service of the local shipping company.

Several enhancements

In comparison:

• Cabinet saws are equipped with nearly universally disliked blade guards which are more often than not discarded because they are deemed by operators to be a danger in and of themselves.
• The Hammer has an electric soft start, this could give an operator an extra second to get out of the way when needed.  I'm assuming this is not the original purpose of the feature however it is a by product.
• Both the Hammer and Rojek have blade brakes that stop a fully spooled 12" blade in under three seconds.  The braking feature increases operator safety by stopping the cutter quicker reducing an operators tendency to remove offcuts near the blade while it is spinning.
• Any sliding table will increase the safety factor of a saw just because it gives the operator more opportunity to place himself out of harms way.  The more versatile the sliding table the more often an operator will be able to perform higher risk operations with greater safety.
• The Euro riving knife is much less intrusive than a cabinet saw splitter with pawls.  As such it is more likely to be left on the machine where it will prevent stock binding and kickback.