I have been incontent most of my life. I have a great wife and two grown daughters. Early on my wife and I decided there was no way to hide incontence from anyone who is in the house with you regardless of age.
We were always up front with the girls. They knew daddy was hurt in the war and had to ware diapers. For the most part it wasn't a problem but for a short time my youngest decided she wanted to be like daddy and she didn't need potty training.
Kids get into everything in the house and I don't see how you would be able to hide it your diaper fetish for long.
Personally I don't think this is something they need to be exposed to untill they are a lot older and able to understand.