No, I don't have one (yet).
I was just looking up some specs on the Petzl website, and I spotted this...
http://www.petzl.com/petzl/Produit?Produit=510
This seems to be Petzl's alternative to using a regular toothed ascender for a Quick Attachment Safety in fall-arrest situations (which I'm sure none of us do, because we don't like shredding our ropes and going "splat" at the bottom).
Interesting - the "cam" actually appears to be a rotating wheel. Could be fun to play with. Note their website states "Not yet available in North America - pending certification".