OK, no photos. Bummer. A step side is a unique truck, I'd thought they would have done some photos of a previous build, just in case if they got asked to do another one.
You haven't filled in your location in your profile. Are you close enough to go by the ATC shop and have them do some "showing" what they are talking about in the interior?
I can tell you that I drove up there twice (350 miles one way) in late 2010, spent all day watching-talking-looking (both times) and was confident in what I wanted them to customize for me that I put a 45% cash down payment at the end of the second visit. And, I've been more than happy the way my ATC turned out. I use it all the time and I haven't had any issues at all. ATC, i.e., Marty & Jeff and their staff make a solid and functional camper without any problems.