Grivel just released a new line of carabiners for 2014 featuring double opposing gates. Could this design bridge the murky territory where cavers are torn between locking vs non-locking 'biners (pack tethers, cowstails)?
Perhaps they help to fill out the connector spectrum: non-locker < double-gate < auto-lock < screwgate < screwlink
This five minute video demonstrates their potential advantage over non-locking carabiners... and some slightly contrived advantages over screwgate lockers:
Of particular note for cavers are the following two models:
Sigma K8G - lightweight 'biner with solid bent keylock gate and opposing wiregate
Lambda K7G - HMS style 'biner with solid bent keylock gate and opposing wiregate
These aren't the first double-gate carabiners on the market (the Rock Exotica Biwire was previously discussed on CaveChat), but they're the first I've seen with doubled opposing gates.
I'm very curious to see how they hold up to caving use. Some obvious questions remain to be answered:
- How easily can the double-gate be opened with a muddy, gloved hand?
- Will the changed ergonomics of the gate opening allow it to easily and quickly clip in and out of a bolt hanger, traverse line, rebelay loop?
- When will someone produce a light, strong, small, autolocker, able to withstand the stickiest mud bath, and at a pricepoint below a 12-pack of beer?!