QR plates - any compatibility? (1 Viewer)

I have a lot of the old Manfrotto/Bogen RC2 type plates, which I quickly lerned were hopelessly inadequate at keeping a long telephoto lens from twisting. Then I bought the Manfrotto Gimbal head, which comes with its own plate, a long-slide in model with two screws for attachment to the lens(hurrah!). Now I'm shopping for more heads and plates to completely replace my old RC2 setup, and am wondering if, just by chance, Manfrotto designed this gimbal plate to be compatible with the Arca-Swiss or Wimberly plates? If so, I could buy a ball head (e.g., from Really Right Stuff), and it would be compatible with my Manfrotto plate. Any experience? I can't find any dimensions on the web.

Arca-Swiss will not fit in the Manfrotto 393 clamp, they are far too narrow. I've heard of someone altering their 393 (not entirely sure how) to Arca Swiss. The Wimberley C-10 is handy for getting an arca-swiss plate on various heads (although you can only really bolt it on the 393 qr plate, not the main 393)

cheers,
Andy