I bought a PD Slide a few weeks ago, to go with my PD Clutch. I've only used it a few times, but already I love the quick-release mechanism.
My only complaint would be that the padded section is too stiff to bend in half, making it difficult to fold the strap as small as I'd like when it's not being used, but that's not a showstopper.
I might get another one, to replace the aging strap on my backup 5D mk III...
