My nittos have been awesome in the snow. Took my TRD pro to winter park, copper, and leadville this weekend and it did awesome. Did part of argentine pass until it got 4-5 feet deep 3 weeks ago. No issues, very surprising, and I'm not in a rush to put new BFG's on anymore like if I got a 4Runner with Duelers.
Did you use 4 hi? We got about an inch of snow and I was all over the place. Even slipped in 4hi at about 20 mph. Never had that problem in my pathfinder with Duratracks.