I don’t know how much snow they’ve gotten this year in the French alps. If it’s anything like a normal winter here in Colorado, descending AdH could be very sketchy, even if they de-ice.
On the packed snow walking tracks, moving in a straight line will probably be fine, but could get sketchy on turns, and if you need to brake suddenly.
I spend 4 months a year riding in snow on my fat bike, and even on the fat bike, I’ve got to pay attention on descents, turns and while braking.
All-in, if I was in your shoes I’d take the Epic Evo. It’ll handle the snow the best, and do you really care if you’re not setting PBs up and down AdH? You’ll also ride slower, so wind chill is less of an issue. This is a big deal when it gets cold. It’s one of the reasons it’s possible to ride in very cold temps on the fat bike - because of riding so slow.
