Electric impact and a floor jack. Change tires when snow is actually on the ground, change back when it's gone.
Sound excessive? I once changed tires eight times in 24 hours, but that was from wets to slicks and back again, and I was at Le Mans....
Gotcha. I drive my front tires up on 1 x 10 boards and use a Pittsburgh 1.5 ton low profile jack using the "clever method" described here.
It was really nerve-wracking the first time I lifted the C6 and put it on jackstands.