Thanks for the information. I was looking for this thread for some time (I even posted in it) and could not find it. It's been some time since I have last been on the forum, but I still use the structured light setup with my own hardware. Also, the university where I teach purchased the SLS-1 some time ago and they use it all the time.
So, my thoughts are to try to calibrate with the glass plate in front of the camera (while keeping the projector perpendicular to the glass plate), then move the setup so that a person can stand on the glass plate and try scanning from underneath.
OK, I have a small project to test now...