A few years back I went out with this girl that made a lot of money being a switch and providing cookie cutter cliche S&M scenes... I generally don't even talk about S&M with providers as they just start talking about disengaged  facsimile stuff..  It is very difficult to hook up with  a psychologically complementary sub anywhere ( One way to look at this is two limbic systems acting out shit tthe rest of the mind does not even know about  or understand, but exquisite levels of intoxicating states  can be reached that can't really be reached any other way). Its very difficult to match up.  The limited,  transactional nature of the hobby distorts the power interactions.. it just does not seem to me that the deep connections for  "inside out" S&M play  will develop.in the hobby world. I was a member of this  organization in DC  for over 20 years,   
http://www.br.org/.. the only time I recall "providers" being around was to augment scenes.