In Wyoming, we have had some snow and a lot of ice so far. I've driven in winter conditions all my life in a lot of different rigs (from sport cars to mini-vans to Jeeps).
So far I have to say that the H3 has done great. It has shown a lot of traction and good grip in snow and ice. Haven't felt the back end slip on me at all. A couple of weeks ago I was just about the only car that could climb the hill to my house without playing bumper-cars on the way up. It does a damn slight better job than my wife's mini-van that drives like a pig in the snow
On the down side is the fact that it is a very heavy rig, and when its slick it needs to have some space to come to a stop. A lot of people out here think that if they have AWD or 4WD, they can still drive fast and stop on a dime.
In the snow I'm not at all worried about how the H3 handles, I'm much more worried about the idots driving behind me.