Just sold an enclosed 22 footer I ran for seven seasons. They do pull like a dream, only issue with wind was high cross winds when it wasn't fully loaded, but that's a 22. Nice that they track in the same trail as the truck tires in deeper snow, instead of plowing their own path outside the truck track like an inline. I owned both. Behind a dmax, it cruised 85mph all day (with good trailer tires), and pulled easier than a 14ft inline.
As stated, the front (and back) doors will freeze shut, just sitting in the sun with a serious thaw, or rain/freeze. Nothing that can't be opened with some boiling water, but don't think you can always just kick them open. I just cracked the front door with a wedge when it would sit for a week in the yard so it wouldn't freeze when sitting. Locks can also freeze easily - fill them with low temp grease. Roof design is also susceptible to holding snow and possible sagging if not braced and/or cleaned. Ramp was a PITA, as was the low roof, but that's the pull-like-a-dream thing again. Rock solid chassis. Wiring so-so. My hinges only leaked at the wall corners, FWIW. I could not fit two 163's front to back in a 22. Good luck!