I have used this magnetron carainber with a Grigri+. It is really quick and easy to use. The closure system is new and quite unique. I am really happy with it. Though it is somewhat more expensive than the screw gate version. I am pleased I purchased it.
Take a little getting used to, can be fiddly to clip both ends at first but feels very nice to use.
Awesome carabiner, use it with my Grigri and haven't had any side loading problems that I had with my previous HMS. It also looks awesome in black, would have liked to have black and blue instead of red but guess that colour scheme isn't what they wanted.
Neat idea. Quite pricey but thought I'd try it. Works well, and slicker to use than a screwgate or twistlok. And it's black- bonus!
I use this with a Grigri 2 and although it is great with a standard belay device, with the Grigri it does take some time to attach and detach the rope. This is mainly because the Grigri has to sit on the small end of the carabiner, requiring it to be moved all the way round past the internal gate, which an be a bit fiddly to maneuver. Other than that, it is both secure and the magnetic latch makes things a lot easier than worrying about a screw gate.