Does anybody have any experience using this adapter to mount PL lenses (Cooke, Zeiss, Angenieux) onto your 5D, or perhaps know somebody who has?

I'm curious how well this functions with the 5D, and if it adds stops to the end result (like a Brevis or Redrock adapter), and obviously what the overall results are compared to other setups with similar lenses.

Zunow PL-5D PL Mount PL MOUNT 5D B&H Photo Video

Any input would be appreciated!

Do you need it now that everyone is coming out with Cine lenses for DSLR's?