IK+FK arm rig

Artwork Blender Tests
1

Just a proof of concept of a IK+FK (not IK/FK) arm rig.
Its intended to be moved using first IK bones(yellow) and then tweak with FK bones(blue).
Not even well finished, it’s just a test.
Comments?
http://www.pasteall.org/blend/13182

2

Auto-response. It’s not working properly. So, I’ll try a new approach.