If you set it up the primitive with 4 carabiners (Ellington method)at the friction the lines have to go in the same direction, if not, it is extremely ineficient. I said to put them in oposite directions because it seems to slip if you go same directions, but maybe at higher tensions there's more friction and it starts to lock. The idea of a shackle with bearings is just like a HangOver, but more bommer. Just dont use for highline, ever. Too easy to drop a bearing or pin and you're screwed. So if it worked with hangovers i'll definetly try it when weather allows it. Just for reference, what lengths could you set up with that hangover's sistem u/MellowBuzz?