I have used it and alot of my customers use it with no problems. It's great for short bows and people who don't like loops. Tuning isn't a problem with it. It has jaws that go onto the string above and below the arrow nock, relieving nock pinch, like a loop, and has a trigger like a regular caliper release. With todays shorter bows and alot of people not trusting , or disliking loops , this is the ticket.