I live in MD and have the summer PS2s.

The summer tires are probably the safest for the Crossfire in the snow since it is unlikely that you will even be able to back out of your parking spot with them. All-season tires aren't going to ensure you get safely where you want to go either. Unless you go with snow tires on 18" wheels you aren't likely to be very successful or confident when the snow comes.

The Crossfire has little practicality in snow other than having heated seats, the "W" position on the autostick, and a pretty good crash test rating.

Consider buying a beater car for most of your winter miles. That's what I and a bunch of others here do. You'd save on things like fuel, maintenance (e.g. tires), not needing two sets of Crossfire tires and wheels, depreciation, etc. so that the cost of ownership of two vehicles won't be much more than having just an impractical sports car.