Yes, it's worth a try with RS. Baking illumination can work well, I used this trick for ceilings in GI scenes.
Big problem: RS's OGL realtime engine ignores the Illumination channel in VSL materials. How to make the illumaps show up in RS's own realtime engine? Is there a walkaround? All the more because shadows would have to be baked too, the RS engine doesn't do shadows, even though my graphics card does.
I'd love to say RS can do great realtime walkthroughs with pre-baked illumination - would be great for architectural presentations - but no, it's all about rendering. Baking can still be very useful for rendering btw. (but tricky!)
-Mark
