SO........ Curiosity got the better of me and I ordered it, 3 weeks later (don't ask how it toke 3 weeks to come from US that's another story)



I think it will be helmet specific as the quick release buckle on my shoei only just fits with push, but if you have a double D ring I think you should be fine.
if any one is interested I did a deal with the company & got 2 so I have another one to sell but you won't have to pay the expensive shipping & import tax that I did