On the 29RK, the rear of the slide out slides over the kitchen vinyl w/o problems, so if you install something thin like Allure, then you should not have a problem, the Cruiser carpet and pad is pretty thin.
In '05, I removed the factory carpet and vinyl on my 29RK and installed a high quality 1/8 inch thick vinyl flooring. In fact, this is a no-adhesive or floating vinyl floor. Mine is held in place with a small bead of silicone caulk around the perimeter and the two furnace ducts, nothing more. The slide out barely touches the vinyl while closing and has never damaged it. Without adhesive, the slide out could easily push the flooring, yet it doesn't.
If you observe closely how the slide out moves during closing, it rides over the main floor seal. It will clear the subfloor by about 3/4 inch at the start. When the slide out is about 1/2 closed, it will tip down and the leading edge will clear the subfloor by about 1/8 inch. Then, when fully closed, the slide out will again clear the subfloor by about 3/4 inch, and this is why you shouldn't walk on the slide out when it is closed (especially near the sidewalls).
My flooring still looks great after 5 yrs of use. Tarkett Fiberfloor, it will not curl, stretch or change shape, which is why it doesn't need adhesive. See my pics at www.picturetrail.com/Dayle1