I think most men are initially titillated by the notion of D/s, most I would also think have no idea what it is really about they are fearful and they assume a girl who is just starting out in the field might be more what they are looking for. Not someone who is going to whip out sounds and a wand. I could be completely mistaken but I think the majority of men who seek a fetish escort want just that, kinky sex but no pain.
Experienced Dommes have a rather specific clientele, most of which are never intimate with the Mistress. Personally I'm between the two, but that's just my opinion.

for the same reason I'd like my heart surgeon to be board certified instead of an intern.

madame patricia totally only the experienced, too many phonys out there