All I have ever really owned are RWD cars, and have never had issues with the snow when I had the snow tires on. So far I have had Dunlop Graspic's, Dunlop Wintersport M3's and now have the Conti Extremecontact DWS's, and none have ever given me a problem....though it might help that I drive around with about 200lbs of car stereo equip. in the trunk.
Just be careful and drive slow when needed. Besides, on snowy ski trips, the traffic is always slow anyway. Plus nothing more fun that turning off ASC/DTC in the snow on a RWD car and hooning.