I have one!
Used it for 10 Sessions from 17m to 5m.
I got it because, I wanted the Shortest push away QR possible.
For me it is a „Game changer“
I am only 170cm with Short Arms.
So before I could Not really push away the bar for Depowering.
If in use with my waist Harness it Looks like this.
If I use it with my Seat harness ( lowest possible hook you can imagine) I have a little longer connection rope.
Before I used to adjust the depower line every two minutes. Now almost newer.
Full depower way. And still comfortable.
The use is simple.
Sand is no problem.
You Automatically Check the QR function evertime you land, and disconnect, Never any trouble. Always working.
When connecting it is super easy.
I personally trust it more than my regular QR.