I'm sure you wouldn't have to imagine the roost after riding one. You'd be living it. The worst part would be having to sit around pantsless for the next day letting the snow melt out from the base of your skull. That seat is small, not much room for sliding back.
The Chatter lodge owns or owned a Hummer on tracks. The drive in an out to the lodge with that machine was a dreaded event from what the guys were telling me. I have seen it stuck on the trail a few times and also broken down a few times. They told me that it was rough, noisey and that it was a high service machine...always breaking down. That being said they did tell me that they needed some kind of machine to do some of the grunt work and this was the answer at the time. I heard that they just plow the road now so maybe they don't have to use it anymore.