The grIvel mega HMS twingate is an interesting concept - it's as secure as a screwgate but there's nothing to forget to do up. It takes a bit of getting used to, and can be a bit fiddly for a couple of hours, but once you have the technique sorted it's great. It was one fit some belay devices - it can't be used with a grigri for example, but is brilliant twinned with a standard tube type belay. Interesting concept and a great price.
This seems to be a solid and secure system and relatively easy to operate. When closed there is no movement on the gate and does give you a feeling of extra security imo. Quite impressed.
Great carabiner, takes a bit getting used to but it's definitely worth having.
I bought this just to try out. The gates were sprung stronger than I feared. It feels very secure once you get your head around the possible failure modes. The only main one I can think of being dragging along the ground causing the gates to open. It's ex