This may sound kinda strange, but how about some claws that don't require a claw mount?
They could be slightly rounded underneath (like the Covertec clips) so they can sit flush against the hilt and have pre-drilled holes in the bottom so they can be screwed into the hilt, emitter, pommel, whatever.
When I was messing around with the old plastic Hasbro sabers, I put three Y-Wing pylons (from the large plastic toy) on a Vader emitter and I thought they looked great. The pylon style could serve as one of these "claws": an X-shape (or T-shape) that has a 1/2" rounded (or pointed) tip.
Just my 2 cents.