Another pro off the camper is you don't pay licensing fees every year. Just put your truck plate on it when it's on the truck. Don't forget to put it back on the truck when you take the camper off. (Don't ask me how I know) Your state laws may vary.

Your heater will run off the 12 volt system but you need a genny for the A/C to run. For mileage I get about 18 to 19 without mine on and 14 to 15 with it on.