Snow is cool if you riding in it on flat ground. I've done some snow tracks on mountain trails which have been a right test. Where the track is cut into the side of a slope, the snow is deep as on the inside of the track and shallow on the outside, but also very slippery on the out side. Hairy stuff when you'r looking at straight drop of 5 or 6 hundred feet.
At Temoana (other side of the Devils Staircase) one day we had to ride through snow that started off at just a few inches. As we progressed the stuff got deeper and deeper. Past the point of no return, we plodded on at a slowing pace till the snow was waist deep at the easiest passable places. Ended up having to stomp a way through then retrieve our bikes and ride through. Stomp, ride. Stomp, ride....
Long Day that one.