This is something that I thought I would use a ton when I got it in a bundle from REP with several other attachments but I think I used it maybe three times total in three years, until recently. It just isn't very comfortable to use when doing sports/swinging type movements when using with a standard carabiner. However, I recently bought the swivel attachments and it has made this much more comfortable to use. Seems like if REP tinkered with it a little and made the top that connects to the cable a little more maneuverable, it would be an awesome attachment. TLDR - not great with a standard carabiner, great with a swivel attachment added to it.
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