Living in the Carolinas, you can drive your XLR year-round. Consider that this has been a very mild winter (so far), it's been even better than normal.
One of the many things that I love about the XLR is that to me, it's 2 great cars in one. As much fun as it is to drive with the top down, to me it's a fabulous coupe as well! The character of the car is so different with the top up as opposed to when the top is down.
I have a tendency to drive the car in a conservative manner, because I know there's no way I'm going to talk a state trooper out of a ticket if you're driving an XLR! I tend to drive even more conservatively with the top down.
But the feel of the car as a coupe is completely different to me. The stereo sounds great, and I feel like I'm more able to focus on what the car can really do.
An XLR is really a bargain, you get a great roadster and a fabulous coupe for one price!