Several times over the last year, I've had complete strangers walk up at gas stations, parking lots, wherever, and ask what kind of work I do, while looking over the pickup/topper combo. Especially when I was pulling my white cargo trailer.
Even with reflectix in the topper windows and a little dog with me, it does not look like something that is being 'lived in' or slept in. The 'raper van' comments (and glares and stares from parents at city parks) that I used to get in my white van, were absent.
It just looks like something a 'working man' is using for work.
Even though it has bit less interior volume than the typical domestic van, it is more 'usable', since you dont have a side door, and that area can be used for placing or mounting things. The front wall and both sides can be used for shelving, a bed, small cabinets, or whatever.
You can special order these A.R.E DCU toppers in a much taller version, with enough room to stand up, if that is a neccessity.