....heck, I've seen 5th wheels boondocking perfectly well off the 313, in the back country just north of Moab (and, in many other remote locales).
When you think about it, there are quite a few shorty 5th wheels out there (some with full-wide rear panoramic windows), with combined length about the same as a Lance 1130 (or, equivalent) with toy trailer towable. If you play your cards right, you could even find some shorty 5th toy-hauler with beefed-up suspension and BFG TA/Ko's & 4-way pivoting head hitch (for tilted hook-up) you could put all your stuff in, and still be as long (or, a bit shorter) than a full-sized truck camper pulling a toy-hauler trailer with extension hitch.
Anyhow, how long would it take to disconnect a 5th, and be off 4-wheeling with the pickup? I'll bet it takes less time to unload/lock a 5th to the pick-up than dropping/reloading a truck camper (!).
...OK, ya'all can kill me now...
On edit: accessing back country with truck camper is in a nested scale like this: a pop-up 4-Wheel camper with no roof-top stuff can access almost anything a bare pick-up can; a narrow-frame hard-side without roof-top stuff can access less back country; a full-sized truck camper with a bunch of stuff on the roof can access way less back country than the two previous truck camper profiles; a 5th wheel (a shorty) can probably access as many back country areas as a 1130 truck camper towing a toy hauler trailer...
