Well, it may just be because I'm using the awesome .dmx format (bare with me, I'm drunk), but whatever.

I can import sourcesdk_content/tf/modelsrc/player/[class]/dmx/* Level-of-Detail meshes just fine, but if that's all I do, the chance of me being unable to export it afterwards (without adding an Armature) is quite big, since, because of the fact StudioMDL is able to auto-assign vertices to boneweights by matching their position according to the lowest/standard/default Level-of-Detail, VALVe's Level-of-Detail meshes don't contain bone data, and Blender complains when trying to export meshes without bones or something.

Currently, that makes me stuck on a Scout playermodel skin I'm trying to make (since I'm just too lazy to do it the unbelievably hard way).

Using Blender 2.69, Source Tools 2.0.1, 64-Bit Windows 7.