Interesting, a new take on the cartridge isolator/decoupler/enabler etc.
"Suspension and a "torsion tether" - isolation and anti-twisting?
Two things to bear in mind with these devices is that they also change arm geometry between bearing and stylus and also effective mass - both can, potentially, alter the sound.
There was an interesting interview with Pierre Lurné on TNT Audio a number of years ago that discusses the cartridge/headshell interface.
http://www.tnt-audio.com/intervis/lurne_arms_e.html