I wish I could lock the differentials! As is I've got 2.5 wheel drive. My limited slip has about had it in the rear axle, and the front axle doesn't have a clutch pack in it. At 7500#'s K=1/2MV^2 becomes my friend when it comes to getting through snow.

I live in an extremely small town, 210 people, and the snow plowing is handled by a couple of guys with a skid loader, and a plow on a pick up truck. I also live in a new housing development, which was supposed to have 15 houses, but only has had two built. So, I'm lucky and they plow most of the snow to the opposite side of the street where there isn't any houses. I usually don't get a big pile from the plow at the end of the driveway.