When I was recovering from my RP and slowly recovering my continence, my Physio Therapist recommended the use of a clamp. My Urologist did not recommend since my sphincter muscles would not learn how to function again if a clamp was used. I went with my PT advice as I was tired of the leaking.
I tried two types - the Wiesner Clamp and the Pacey Cuff. The Wiesner Clamp was OK but felt uncomfortable and it restricted my movement. I fiddled around with it to find the best position but even then it did not completely shut things off. Had I known what Luckyme did to get it working and comfortable, then perhaps it would have been a different story. I bought it off Amazon as it had a money-back guarantee...I did receive my money back.
The Pacey Cuff - although in theory it looks like a better design, it didn't do much. I fiddled around with the settings, tension, etc. One of the problems I had was that it made my penis stick out - making things very uncomfortable if you were wearing a pad.
I became continent without the use of a clamp after a few months, but I could see the need to revisit the clamp if I was still incontinent. Many have found them useful.