Hwg,
In the overall scheme of things, it doesn't take all that long to get used to. Sure, there are pads and Depends and it's a pain in the butt for a while, but once he is past that stage it seems like a fairly short time. Honestly, it is frustrating and seems like a long time while one goes through it, but it's worth it long term.
It's always harder (emotionally) on the front end. Once you're in the middle of it, it's just a matter of dealing with it and keeping a positive attitude. After that, it's fairly easy. He'll be telling other people here about his experiences and helping them to see that there is a light at the end of the tunnel, that some amount of fear on the front end is to be expected, and that it's all worth it in the end.
You have each other through all of this and many of our experiences have shown that couples get even closer through all of this. I know it did for my wife and me and I've read the same from others. When you face this together as a team, it just works.
Mike