Being a former Airstream owner, I really like the aluminum frame and exterior of the Camplites. I could see myself owning one. The big negative with the 6.8 model is the small fresh water tank, only 13 gallons. With the water heater you'll get 19 gallons, but that's still lacking if you plan on doing any boondocking. You'll need to bring extra water with you for longer boondocking stays.
Their website says that you can mount this camper on a 1/2 ton. I wouldn't. By the time you load up this 1,780 lb camper you'll be pushing 2,800 lbs. Best that you buy a 3/4 or 1 ton truck if you're serious about hauling a truck camper. If it were me, though, I'd skip the 3/4 ton and buy a 1 ton.
Camplite 6.8