Regarding the overall design of the supercharger clutch :
Years ago ( back in the 60's - 70's ) I used to service large computer systems that had printers with magnetic clutches for moving the paper.
These clutches utilized powdered magnetic metal ( I THINK it was iron. not sure ) that had an internal rotor and stator.
Surrounding this was a coil that when energized caused the powdered metal to align, thus bonding the rotor and stator.
These clutches lasted for thousands of hours, the only failure was usually attributed to bearing failure.

NO springs to break, NO clutch surfaces to wear, and totally silent.
Why didn't they utilize this technology ?