Alltough both my Owner and I have had other people train/mentor us at different times He has often said the best teachers he has ever had have allways been the submissive herself.
Damn, you beat me to it. I was going to say that if you really want a mentor for him that will understand you, your best bet would be to seek out an wise female submissive (or perhaps a switch). Besides you, who else is going to understand your perspective better?