Great idea, but I have an older Manfrotto tripod head. I didn't realize that there are two types of Manfrotto plates, so I had to return it. The return was easy.
I use it on my DSLR in combination with Clutch and Slide. Great combo! It makes it easy to switch between handheld, sling carrry and my Manfrotto carbon fibre tripod. This is all You need for simple and flexible carry.
I mount both the Clutch and Leash ( Belt and Suspenders) onto my Nikon D600. I also use a Manfotto Tripod. The Dual Plate allows me to keep the PD straps mounted on the plate while the camera is mounted on the tripod... this is the most practical option that I can find to integrate the fine features of both Peak Design and Manfotto
I have this plate on my sony a7m3, I bought it in the first place because I can clip it on my 'capture camera clip'. I prefer Manfrotto head plates and it fits always. Never have to change to another - but that is more or less a joke, I don't like Arca Swiss, to slow to mount the camera on, in my humble opinion.