Hi, RhO1, I don't know anything about this subject. However, the other day I was looking at the Gender and Sexual Issue forum here at PsychCentral and came across a thread started by a 16 year old boy on this very subject.
http://forums.psychcentral.com/sexua...e-diapers.html
Older, more experienced posters who knew about his subject had reassuring things to say. You might find some answers to your questions on that forum.