Hope your predictions on snow levels are right as I'll be in Utah end of Feb for some snow.
As far as camera bag on snow goes, I used many things from nothing, normal backpack to full street camera bag with strapped on tripod and light stand. Lifts are not an issue. Biggest issue is padding for the gear, not so much to protect the gear but to protect your bony from sharp hard objects. If you fall on a tripod on hard packed snow, you would do more damage to your body then to tripod.
Last trip I got Dakine camera bag and have to say it works well. No fast access to camera, but most of the time you don't need that anyhow. has space for a bit of gear and well padded with back side access so you can place bag on snow and open it wide open to get to all your gear. It has all your usual straps and clips to make sure it is tight around your body and moves with you. I fell on it a couple of times, and had no issues. Overall though it makes sense to ride with care when having photo gear on your back/front. and if you are heading for the trees, slide with board first, it is cheaper then camera body or even most lenses.
GK


