Sorry, that post wasn't in response to yours. I was replying to the post I quoted, the cube was only to show the process of getting the model into LE. I'm not disputing if Sketchup has issues, as I know the exporters in the program certainly do. However, the UU3D plugin for opening sketchup files seems to work a treat. The following is an in engine shot of a mesh modelled in Sketchup, and converted using uu3d from skp to gmf (you can click for full view):
I didn't really want to be putting any of my images up at the moment, but I don't have any complex meshes from Sketchup that aren't from my project. Don't have anything more complex to hand right now, but this mesh, as well as others, have been okay so far.