Have to say that, as for me, I've been bitten by this snow biking bug. Have done more biking, this winter, than the previous ten winters combined, maybe more. It's catching on, up here, in snow country. We now have some fat bike races in the snow over some of the same courses used for XC ski races. Don't know if snow biking will ever become an Olympic event and I doubt it will become a major bicycle sport in this country, given that, like XC skiing, it's limited to snow country. It is fun and a great workout, though, and even in sub zero weather, doesn't take me long to warm up. It's actually very practical, too. It's not just a stunt. On hard pack snow/ice, you can really fly. Have had days when I logged the same average speed over my trails as what I do in the summer. Nowhere near as fussy about snow conditions as with XC skiing. For sure, my XC skiing has taken a big hit since I've been bitten by the snow biking bug.