Wha hey!
Couldn't possibly comment....that's between myself an Mistress Claudia
On my own Orbed Gyro, (2nd hand buy) it didn't come with the clamp ring, just the nut.
Phoned up Steve at Michell asking to buy one, and his quote was that he didn't actually use it himself, its not REALLY required and you wont lose anything without it.
He explained a bit about the concept behind the Orbe platter and clamp and how it effectively makes the tonearm think its playing a record 60mm thick.
All about damping resonance and changing its frequency outside audible range.
Just to go off-topic for a sec, been doing some customisation to my turntable and I'm bowled over (seriously) by Michell's customer service.
Absolutely the best I've ever come across - could not have been more helpful.
Bulletproof turntable from a British engineering company that really looks after their customers.
Fantastic, cant praise them enough.