I've been using a Giro Remedy the past few years. Also tried a Specialized FF but it didn't fit my head. The Remedy makes me sweat a lot and if I have a substantial climb, I hang it on my camelbak until I summit. Cooler than a motorcycle helmet, but not near an xc helmet. To get near that, I think you need to get from overseas to avoid us regulations. I don't use it much due to the heat.
I'd think it'd be fine for snowboarding, considering using it that way myself since my snowboarding helmet is awfully old.