I find this topic interesting. Why? Because I'd like to be and then I'd like to be able to reverse it at will. So I started with catheters. Yes I know all the risks out there, but after years of never having anything go wrong I think that for at least me they are over stated, so I'm not going to discuss the issue, way too much about that already out there. With that said, I then started wondering if the catheter could be worn completely inside without the tail sticking out. Turns out that it can be if modifed and parts from two catheters are combined, and a process of installation followed. Does it work well? Yes and no. I've worked on and off at different designs and come up with one that works pretty well for a guy (not yet hit the perfect combinations, and haven't tried for a long while now). For a lady it was a piece of cake. I diaper friend of mine tried the lady version, it was really easy for her. Why is it difficult to design one for man? Well there are tons of issues, but for the sake of time I'll sum it all up by saying length of plumbing and the fact the plumbing moves in all different directions.
I read in one of the replies that pee doesn't drip, drip, drip. That's my experience. More often no pee comes out when sitting in a chair, but look out when you stand up. Sometimes nothing comes out while standing, then bend down, and it floods out. There doesn't seem to be any real strick pattern, just general patterns.