I have a fifth wheel I travel in the US. I want something for driving the Pan American highway. That's the entire reason I talking about this. I already did Baja with my fifth wheel. Yes some of the roads were narrow, I've been on worse, unfortunately. That's part of the reason I'd like something smaller.
The Pan American highway handles 18 wheelers so I think it could handle a dually if needed. In fact I know it could and would certainly be better than my 35 ft fifth wheel. I'd like something smaller than my fifth wheel but comfortable enough to spend months at a time in it. I know people have done it in school busses, so a truck camper should be a piece of cake compared to that. I want to drive to Argentina and back over the course of a few years. No vehicle is perfect for something like that.