I've been playing with Google Sketchup and I have to say, it's very easy to use. But I'm wondering whether I'm just wasting my time building well.. buildings, which can't easily or efficiently be used in a game engine.

Has anyone else had experience of building shapes in Sketchup and then importing them into their games?

I know the pro version does support export to obj which GLScene supports but how realistic is it as a concept?

I'll need to create a TON of buildings really and I like the idea that I can knock up fairly complicated structures in Sketchup, texture them easily etc.. but I can't set up trigger zones, materials, lights, place entities, compile BSP's, path nodes or anything like that.

Wisdom welcomed.