Bravelion, if I were you I would PM pics of whatever you are looking at to one of about the 15 or so most active people here. The reason is that most of us can tell you in about 2 seconds whether it is true SMB or not, usually based on one or two interior pics.
Also, I understand that you feel SMB's are built to bit higher standard than most modern RV's but they are not at all built to a higher standard than most modern camper van conversions. There is a difference. I am not meaning SMB vs. a home build, though there are many, many people who have greatly improved on SMB's ideas with their own skills. I am meaning that if you take an SMB, even a newer one, and put it next to a Benchmark, Outside Van, Vanhaus, Van Specialties, Freedom Vans, Campovans, etc. the difference in design and execution is often huge. Most of the time the price of admission is too.
I love Sportsmobiles and have owned a couple and built numerous homebuilds. SMB's ideas and materials are not the best out there. They have stubbornly refused to change many things over the years that leave them in the dust of some of the modern builders.
I'm not at all trying to talk you out of an SMB. If you want a rugged pop top E-series van you can do a lot worse. If you want the latest and greatest Euro style van, more for road use, I would t least consider other options.