I was in the same shoes as you. Not wearing a helmet in the snow that is... Until it hit me, I'm a cyclist as well and wear a helmet religiously. I realized that unlike cycling, I know I'm going to fall. Alot! 1000x more likely to smoke a tree, and have people flying around with very long blunt sticks with sharp edges... I'm going with a Giro G10 myself. Go try some on and see what fits ya the best.
it was unbelievable.. I never hit my back so hard... I mean yeah my head hurt.. but I hit my back SO hard that it far outweighed what happened to my head.. lol I guess I just have a thick head... but yeah will probably do both.. I don't like the restriction of pads.. but it is better than losing a whole day of riding due to some dumb injury..