I originally posted this in Commuting, but didn't get much of a response.
I have a 4D Toplight and want to mount it to the seat post. I've found this mount

, but not sure that it will work with my QR that's on the seat post clamp. My goal is to mount this light to the seat post, move the Cherrybomb to a chain stay, and possibly get a Hotshot on the seat post as well.
Any ideas?