You read it right; I hang from my hooks if the situation seems OK. I am not a working arborist with insurance, employees, and other issues, so I don't get too worried about these ratings if I trust a piece of kit. My Bulldog Bone is not officially rated either. And regardless of gear, the tree limbs we hang from are never rated life support. I really see it as a gray area and depends on the individual situation. If we adhere to the rating totally, the hook is only good for work positioning sideways, but a lot of us use them constantly for traverses and such, where we are indeed hanging on them at least temporarily.