Odd man out...
20+ years riding full time in all conditions pow to pipe but not on rails. 30* 15* positive at 23" wide. Centered even on a directional board.
A forward stance allows you to project your hip and weight into a healside turn. It does NOT inhibit your ability to ride switch, once you learn to use the upper and lower body separately.
I have ridden duck and I've ridden plenty of rocker boards. It may be fun but... I prefer a camber board and the stance I ride so that I can have power over my edges. Pulling g-forces is what turns my crank.