Hmmm, interesting approach. I've never really had any problems with parenting guns and such to characters hands, or backpack/shoes etc.
Another way i though, was include everything that was to be attached to the mesh, and simply use vertexalpha to hide the parts i wouldn't need.
Another way i though, was include everything that was to be attached to the mesh, and simply use vertexalpha to hide the parts i wouldn't need.