Like phoenix said, non-pano pix work fine. It can be used as a photo slideshow but why? :) There are much much cheaper products out there for simple pix slideshow.
I've added normal photos in many tours which all work fine. Have not yet done a tour without panos... hhmm. I see ur point. Why don't u try it and tell us?
If I only had an hour to chop down a tree... I'd spend 45 mins sharpening the axe.