I've got one in addition to my other rides. It's by no means replacing any of them, but it sure is fun. It's getting more of my winter solo ride time than the other bikes. Not the bike I'll be taking on fast group rides, huck fests, or when wanting to just be pedaling and hauling ass.
Not as fast, different, and fun. Up and down stuff that would have me walking with the other bikes, at least in the little bit of snow we've had so far. Beyond a certain amount of snow, I'll still just be
busting out the snowshoes. Other than that, it's very fun in slow speed technical and rock crawling terrain - way more nimble (at least mine is) than I'd anticipated it to be. You can trackstand for days, and it's actually pretty easy
to hop around on the thing.
There is a lot of cush with the tires, but...it's still a rigid bike. If riding regular trails and not snow covered stuff, you still need to be smooth or it'll remind you very quickly of that.