I make it a point to get out to our local winter IDPA Sanctioned match each year, and often work it.
Shooting with very bulky gear on, with numbed hands, and trying to move safely and quickly on snow and/or ice is a real test! But if you want to know what you and your gear can do, you've got to try.
I did it one year after having been sick all week, and on no food, and it just became an endurance test for me. Not a great deal of fun, with 6" of snow falling during the match and temps never rising above freezing through 12-14 stages. It did help that one of the guys in my squad shot it in a kilt, so I figured if he can do it, I can!