Never tried it (wasn't even aware of it.....seems it's like that with most ostomy products for me). If you have high output I can see it being a problem. If you have a controlled output, meaning you kind of know when and how much....I could see it being useful. The issue is the shape your bag takes is different if it's just out there and if it's being held against your leg by this clip and your pants. When your bag hangs outside your pants and fills up say half way......it'll have a significant bulge to it. Now if you take that same half full bag and press it against your leg like your pants would do if it was tucked in....that output moves up, because it has to go somewhere as you make one dimension smaller. So if you use that clip and your pants keep the bag fairly close to your leg...you'd need to keep a constant eye on it to make sure it doesn't overfill and pop your barrier off. Then on the other end of the spectrum, ie colostomy....the clip is forming a narrow opening that firmer output might not want to go thru.......resulting in a lot less useable bag volume. And if you're not paying attentiong would again result in popping off your barrier. So like Goldilocks.....the middle osto-bear could probably use this clip just fine. But like I said.........I never tried it, so I'm speaking from only observing it and not actually usage. Which makes my comments about as worthless as tits on a bull.