I wouldn't, just because someone's a doctor it doesn't mean they know anything about sex barring 'the penis goes in the orafice desired' unless its a medical problem to do with sex. It's like saying someone being a dentist means they know what you like to eat because you eat with your teeth.

It may not be strange to you if you live somewhere in a culture where they are used often, but when you've never heard of one before then it does seem really strange. I dont understand how a doctor *can* specialise in sex. If you have a medical problem to do with sex go to the GP, if you have a mental problem with sex ask your GP to refer you to a therapist. Just sounds a bit Hollywood dog whisperer to me, but then they don't exist in my culture/country(as far as I know). It's just a totally foreign concept to me.