Well, sort of. The Necker sheath is just a tad too wide, so you can only attach one side of the Necker sheath to the ankle rig with two of the four torx screws. I tried this, and even with just two fasteners holding the Necker sheath to the ankle rig it seemed fairly secure. You could always lash the other side with some cord, but the holes on the second side just don't line up closely enough to get the torx fasteners through.