I haven't done anything with my ceiling yet, so I'm not speaking from experience.......
I doubt that the popcorn paint would be very satisfactory. Even in a tall ceiling bus, there are too many things (like hands) that seem to be attracted to the ceiling.
One thing that might work is the fiberglass sheeting that they sell for bathroom walls. It has a textured surface, and it bends pretty well, too. It ain't cheap, though, at about $40US locally.
Of course, wood is a texture.... ;)