I agree with JM on the point of view a guy would have, but I personally would never have been comfortable with a male photographer for my BD. You need to be relaxed to take a good BD session, so if you aren't going to be completely comfortable, go with a woman...
Also, I wore a corset for a few of my shots, and guess who helped me get it on... yup, that would be my photog! Forget everything else, I would not have wanted to ask a guy to help me get my lingerie on...
Just my 2 cents.