Even with a pdf solution to a quick-viewer for 3d models, you still have to have the pdf view loaded on each operating system that the model is to be viewed on.

I know pretty well, that a script can be set up to both expand the UI in MoI and do something cool like auto-rotate. The auto-rotate script is pretty snazzy BTW.
I bet there could be a way to use this ability with MoI to show off a model.

Maybe not from a purely executable standpoint, but maybe from a command line run. ???
MoI's clean and anti-aliased viewing of NURBS models is hard to beat.