In reply to UKC/UKH Gear:
It looks to me as though it would trash your QDs, unless I've misunderstood.
Good practice is to always use a QD the same way around, i.e. always clip a bolt (when sport climbing) with one end, and the rope always runs through the other end. The bolt end krab gets dented and cut by banging against bolts, while the rope end krab stays nice and smooth as it just has the rope running through. If you don't do this then the rope runs through the dented / rough krab and quickly gets trashed.
Surely having a metal device (it looks similar to a grigri attachment point) on the rope end krab will cause this effect? Especially as it takes the force out of lead falls, so will be taking shock loads.
If this is the case I wouldn't use one, nor want to climb at an indoor wall which did (unless they also provided their own rope!!!)