Roy, my Dad has one of those.
My Dad's was built by Radical Tops here in Kempton, who designed it. They later sold it to Safari Campers.
I am a huge fan of this thing if there are only two people using it, but there is no sleeping space for the kids.
There are a few problems though (note that I don't know what design changes there has been):
1) My Dad's is mounted on a single-cab Hilux 2.7 legend 35. It is the longer version, that ends level with the edge of the open tailgate. In retrospect, the camper is too heavy for this vehicle. With a tankfull of water and nothing else packed, the vehicle is on it's maximum legal limit. We also fitted Bilstein shocks from Mikem and air halper springs to handle the extra load. Also, the centre of gravity of the camper is also pretty far back, and this causes some serious handling issues on heavily corrugated roads. The fuel consumption @120 is about the same as my Patrol's, and thus my dad limits himself to 100kph GPS speed.
2) The legs originally supplied were useless. They had wheels on the bottom, a horizontal crank-arm and the legs were "kinked" to make room for the crank. The result was that the canopy could only be removed on a perfectly level concrete floor. Even on our lawn at home, the wheels would dig in too much and coupled with the weakness of the legs, the camper could not be removed. It also wobbled frighteningly when you rolled on the bed, if it was not mounted on the vehicle. Furthermore, the legs were too large and heavy for my Dad to load. The camper was bolted to the bakkie with four bolts, but the front bolts were almost inaccessible, and one had to unpack a fair amount of stuff to get to them. You also needed something to stand on to reach them. Because the camper doesn't fit perfectly inside the loadbed, it was hellishly difficult to re-align the bolt holes when re-fitting.
In short, the first time we put it back on, it took us two hours. Lastly, the electrical work was shoddy to the point of shockingness, and we had to re-do it completely.
We then spent considerable time and effort re-designing the attachment method and the legs, and it now really is possible for one person to un load or re-fit the camper in less than 20 minutes. I have done it in less time than our neighbors unhitched and levelled their caravan.
I still think it is a magnificent idea, but only for two people, and it needs some attention to really get the best out of it. I also beleive that it must be fitted to one of the three large bakkies on our market, being the Cruiser, Patrol or F250.
If you want more info on what we did, let me know.
Mag ons ons kenniskry met lekkerkry aanhoukry.