Well, a cadge is very use because it gives you the freedom to move your body in nearly any way. You olny have to get used to the fact that you have a cadge there so you can't close your legs anymore that close.
And it gives you the feeling that you can't get hard anymore, but it can rub at the balls when they're wet. And when your prenis tries to get hard for some time that balls can get purple. Because when the penis tries to swallow it needs place and pushes the balls against the methal ring. So the supply with blood gets reduced and they can get purple and swallow a bit. As long as they don't turn blue... . If you take a bigger ring so they don't turn purple the ring is often too wirde, the prenis can swallow and can grow, so it'll pull the ball.
It's always very hard to sleep in a chastity cadge as a male, because in the night you always get hard. So when you can't get hard ... you'll notice. Always needs some time to get used to it.
And you can't wear it permanently for health reasons. It's important you can get hard sometimes because the body wants to build new blood vessels that way and your tissue needs to stay flexible.
When you get hard and you penis gets pulled down it can draw a bit and hurt a litlle. Uncomfortable feeling. So I inagmine a chastity belt like this also not to be very comfortable. Except when you can't get hard in it.
The best fitting belt would allow you to get hard and keeps you penis up, so it won't hurt. And it would also be easy to clean and also stay clean after going to toilet. That would be a cadge you could wear forever