Quick couple of questions about this item:

Firstly this will pertain to those using this clamp with MHS pieces from TCSS.
How well does the clamp sit over the hilt pieces, imagine a 8" DF. Is it loose enough that it will need to be secured to the hilt with something, (a setscrew perhaps?) to avoid rotating?
Also, will a standard bubble strip from TCSS fit into these clamps?
Thanks in advance