Plume HMS K3GH

On first impressions it looks like there won't be enough space for two 8-9mm ropes to run efficiently when belaying or abseiling and it really doesn't look like like you'd be able to get two clove hitches on there.

Having used them for genuine real-life rock climbing however, I found that the ropes ran just as well as they do with my usual DMM Phantom HMS, the only difference being that if the Phantom flips around so that they're running on the narrow end it's still possible to pay out and take in OK until you turn it around again and that is simply not feasible with the Plume. The narrow end is really narrow, to the extent that it probably doesn't sit very well on wider belay loops. But if you're looking at a karabiner like this it's unlikely you're wearing a big chunky harness I suppose.

I was also able to fit two clove hitches on one Plume with double ropes and also just about managed to get a clove hitch with a double rope next to one with a single rope. I was amazed by this but it doesn't feel great- there's not loads of space in the carabiner so it's fiddly and while I'm one of the minority who's absolutely fine with the way that double-wiregate krabs work, I don't think they lend themselves to more complicated rigging. I will probably be sticking with DMM Sentinels for this kind of task.

Where I think the Plume K3GH will really shine is for using with a belay device in guide mode as the krab that just sits there with the rope running round it- it's so much lighter than other HMSs but the diameter of the bar is just as effective for this sort of task.