Great jacket. Also have the Sidewinder AR. I wear the sidewinder on warmer ski days. The Scorpion has slightly more substance, due to the microfleece layer inside (but I would still consider this a shell). Only minor drawback compared to the sidewinder is that the fleece on the sleeves makes it a little bit tougher to get your arms through (more friction). But that's a minor complaint. I like the straight front zipper better than the sidewinder's side zip. Fit and construction are perfect. Hood is awesome over a helmet. If you layer right, you can wear this under pretty much ANY conditions. I've worn it in sub zero wind chill, blizzard snow, freezing rain, etc. Nothing gets through. I considered getting a heavier down-insulated ski jacket for those ultra cold days on top of the mountain, but I've find the Scorpion will do just fine with layers.