As several have indicated the system does exist (and is even
better) for the XL1(s) and XL2. They have a fully manual lens
including barrel markings. There is a follow focus system available
for it without any problems.

Indeed not for the auto lenses (which wouldn't make much sense
since there is a full manual lens).

My point was about the design of the auto lenses. Not the manual ones as they obviously have real barrel markings and manual capabilities. My point was only that the design of the stock lens "servo" controls does not allow third party companies to make a follow focus for it. I mean they could but it would never be consistent and would ultimately be useless...right? Hence if you want that type of system you have to fork over the cash to canon for the manual lens and then pay for the follow focus rig too.

IN a way I guess it is canons brilliant plan to force us to buy more canon stuff!

The cool thing about the DVX focus is if you add century optics focus ring adapter setup you can create reproducable pulls and what not. Maybe the FX1 will do the same?

Keep in mind that you do NOT have to BUY the XL2 *WITH* the
default lens! You can get the body only package with the manual
lens directly to not toss away the money you basically would've
spend on the servo lens.

But ofcourse people then want the servo abilities again so
perhaps the DVX is a better choice for those people. No camera
can please everybody.