all my rwd vehicles drive awesome in the snow.
of course, my idea of snow is fractions of an inch on roadways.
It's all relative to driving ability, too. Growing up in snow, and having had rear-drive vehicles for many, many years...I'm pretty good at driving them. It's also a blast when you know how to control your drifts and whatnot.
But, for your average soccer mom, I wouldn't recommend rear drive for an icy/snowy place. It is an acquired skill to a large extent.