Think I'll muddy the water a little here! Right now I have a 2012 Roadtrek Agile SS, my second one. I owned a View in between, which I hated, because it was too big to park anywhere I wanted, and it had dual rear wheels, which I did not like to drive.
However, the best and most comfortable traveling and sleeping camper I ever had was a Northern Lite truck camper on a quad cab 4X4 Dodge diesel truck. My late husband and I took it all over the west and Canada. It slept 4 comfortably, had a nice bathroom, and we could park it and drive it where ever we needed to. When we weren't camping, we took the Northern Lite off and used the truck. It got close to 20 mpg.
Alaska is certainly a place where a good truck would fit in!