Some people have beaters or other cars they use for winter and store their crx's. I plan on driving mine this winter, for it is my only car.
Yes, snow tires are a good thing. If you have nice rims and race tires, I'd recommend buying a pair of cheap steelies and putting snow tires on them.
My old 5th Gen Si had 16's and Toyo's on and it was HORRIBLE in the snow.