I use it for everything. It exports the trunk seperately from the foliage so you can do some pretty nice things with shaders.

Just in support of TreemagickG3 if anyone should know this it should be frank. It's not the quality of your models or the amount of poly's that make a model. It's the textures, lighting, shadows and how you use them that makes a quality scene. Your game is just a movie set and you are the producer!