i feel like pivots would be better suited for park, personally for pow planks i'd personally go marker jesters or salomon sth14/16 driver (16 is more metal, 14 is more plastic)
i also have px bindings on a pair of park skis, and maybe it's because they're super worn out, but they are a real pain in the ass to put on in deeper snow, probably just because they're so old, but that's just my perception ....