i have never but from what i understand the design enhances nose+tail presses so buttering and the like becomes easier. But carving can be harder because it doesn't have that "bounceback launch" (sorry can't explain it since I'm pretty ignorant on board designs) between your heel/toe transitions. _--_ is normal boards and -__- is rocker??
really naive but from watching a bunch of videos on rocker and r-camber boards, i think thats what i got