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Never heard of it. Never saw one until I read your post. The product spec is pretty confusing, though. The B&H descriptor says it's for the 60D, but the product overview says it fits ALL of the body styles, from the 1-Series to the 5D, 60D, etc. The specs also say that it attaches via the camera's strap lugs, but the pictures show a device on one end for attaching it to the tripod socket. Weird ...
Yeah, it is confusing. Don't know why they mention 60D other than to say it will work on non-pro bodies. Looks, to me, like the thumb wheel attaches to the tripod socket and the strap at the other end attaches to the strap lug.