^^Beware 'hard' clipping kit. I've lost two Petzl knives clipping them direct through the krab hole. When squirming about they are prone to self-unclipping, a bit like the issue of direct clipping hangers then moving along a traverse line.
Incredibly the second knife, replacement for the first one , was lost the very first time down a cave! Slow learner! I now have the knife on a short quick draw, so 'soft' clipped. This seems to have solved the problem.
When I clip a Pantin to harness via its own strap this has the same effect. So far so good. My Pantin doesn't have the hole, but I wouldn't use it if it did. Or I'd use a screwgate.