It depends on where you want to go with your camper. Some places, a tent topper on a Jeep might be what's needed to get there, or maybe a backpackers tent and an ATV is required...
For me, a 4wd pickup with a not too wide, fairly low roof height truck camper, that doesn't stick out much beyond the rear of the truck, is fine for everywhere I've gone. Most of that was done with my old 8.5' Six Pac on the F350. The Six Pac was a little wider, longer, taller and heavier than the camper I have now, but not by very much.
I really like that I can close the tailgate with the new, shorter length camper on the truck. I get to have a porch/tailgate and still tow a trailer, without extending the hitch. The Six Pac was just long enough that the tailgate couldn't be closed.
The 8.5' Six Pac was a vast improvement over my previous 10.5' Vacationeer, which was also wider and taller. I never liked all that extra camper length sticking out the back, especially since it didn't really equate to much more usable interior space, compared to the 2 foot shorter Six Pac.