In reply to thomasadixon:
I agree with cyberpunk.
Bit hard to get out when fallen on, Yes
and a bit heavy compared to small cams. No Probably lighter
But they go in places small cams won't (narrow head), Yes
seat better than small cams (don't walk) Yes and No Because they dont walk need to be aligned with load.
and are, like cams, very quick to place. But because you want one side to grip and the other to slide, they are difficult to assess how good for a fall.
Great bits of kit. ???? I found some and very very rarely use them.