Man made snow and ice are the norm, looking for board that is stable, will not easily catch an edge and that handles icy conditions with ease.
A wise man once said "A snowboard does not catch an edge, it is the rider that catches it"... And if I wise man didn't say that then I just did.
Ultimately, camber will be better on ice and hardpack. Catching an edge really shouldn't be an issue for people that have at least a year or two under their belt.
Some people like the various edge techs like mange-traction/frostbite edges, etc. I prefer to go back to basics: A good, fairly stiff, cambered deck with as much effective edge as possible. A rockered nose isn't a bad thing though...