I am all in on the trailer concept. If you have to move the VX, either to go wheeling, or to the store or for weather or any reason, you have to pack up your entire home. A trailer on the other hand, you can just dump, no crazy change in center of gravity, easier to store and what not. No worries about structural integrity and the list just keeps going. I can't think of many pros for a roof top tent other than it looks cool in the campsite and you save a few bucks.