I think this is the reason festool wants those pictures changed (being contacted about the kapex extension wings).
I have the set version of the kapex, and I like those things, but if anyone is considering getting them, I would advise to order an extra pair of support brackets (and maybe the black things that go on top, if you use tall stock; but those would get in the way of the stop flags).
Since the extensions are only attached to the crownstops with 1 bolt, they get knocked out of allignment pretty easy (but are corrected just as easily).
I leave the legs at the end of the fixed part of the wing, and have one of the support brackets in between the bracket of the legs and the crownstops, the other one at the extending part. I don't like the way you have to set up the legs, and by leaving them on the fixed part of the rail, you don't have to move them when you alter the length of the extensions.
The thing I like most about the things is the system part, they have a groove in the back aswell, with which you can attach them to the CS fence so they can also be used with the CS saws and the mft3. (allthough it fits the CMS; it would be pretty useless, since they don't have the pull saw functionality)
Most carpenters in the US prefer continuous supports, I guess that's why they don't sell the things there.
BTW, Forrest, do they actually have different productnumbers for the 110V and the 220V versions? ???