Sturge, they can kill it in the powder! Some bikes summit much easier than some high hp sleds. There are deep powder vids all over youtube. The technology has come a long way in the last 3 years alone.Could be wrong but I would be surprized if those do well in powder...pretty narrow track would likely bog down easily. If you're looking to use it for backcountry skiing, you would obviously need it to do well at going UPHILL in powder so you can get to the goods.
Looks like it would be lots of fun on groomed trails.