We are using these as our starter feet on our 30 degree wall and I couldn’t be happier with their performance. The facets are nice for finding that just right foot placement. Large enough to use for flagging and getting off the ground on your sit starts, but small enough that you have to think about your feet. We haven’t used them on our 8 degree wall yet, but I do think they could work as crimps as well, we just have an excess of crimps!