Meh. Snow tires are incredible in the winter
+1. Here in Toronto I'd say most people have.
The way I see it, it's not much of a cost if you keep your car long enough, as your tire wear per mile is going to be the same. I save the cost of changing them twice a year by doing it myself, which is very easy assuming you have your winter tires on rims. And the little cost for rims and tools is definitely worthwhile for the safety and convenience benefits.