Well so far I haven't had any problems with sketchup importing them, and not to critizize 343i or bungie or microsoft, and this may just be all video game models, but they aren't... very geometrically friendly, or at any rate they are all texture and not a lot of shape. Just saying, thanks for the models anyway, they are still good models none the less.
P.S. Does anyone have a solution for importing high poly obj. files into sketchup? I know you could separate the model in question in half in blender, but blender is beyond me atm. Thanks.
-Seth