My thoughts on that product are, "meh." The only reason the gun should be coming out of the holster is cleaning or shooting, and in either of those instances, the re-holster process can always be slow enough to avoid blowing off your junk recklessly without a add on that may or may not work when it is actually needed.
Due to AIWB, I have to remove and replace a few times a day to piss. Yeah, it sucks actually, but I haven't blown off any important pieces yet.