Fade, I wear Marmot Precip full zip pants, but I've only been out in moderate conditions. I have them on in a picture I think is posted either in this forum or trip reports from a year or two ago with Cordura gaiters that protect them from my ski edges. For heavier conditions, you might look at snowboard bibs or pants. Not sure how waterproof any particular brand is though. I have a cheap pair of snowboard pants, but rarely wear them since I have a ski suit I wear for downhilling.