I have a James Baroud Evo and admittedly its not the 'very cool' unobtainium Campteq, --I do have a nice warm roomy place to sleep. I like it because all my sleeping gear is in it and no prep to crash for the night - bag, 2 pillows, slippers, PJ's, reading material, etc..
Here is what I know - you can actually buy one! -- and based on 140 nights -- it comes with a solar powered roof fan, its fibreglass, is waterproof, snow proof, windproof (survived terribly windy nights), came with LED internal lighting, internal mesh storage netting, has a fly on the rear window, weighs about 150 lbs., never had to modify or improve any design part (dealer did replace the fan - and ladder hooks) , has continuing dealer support and cost 1/2 of the Campteq. I now have a 100 w panel up top.
Its does sit higher, not easy to close and is less aerodynamic, but I get 17 to 18 mpg so not a big deal.