I have only had one from a male and he made me very uncomfortable. He kept telling me to take all my clothes of which I refused. He also keep telling me he was from France and it is OK there to be nude and walking around. I did not get another one for years because of him. I got more tense the more he touched me. Today I would have asked for someone else but then I was to shy to..
At the moment I'm a little more comfortable with a woman because I'm breast feeding and prefer some modifications so I'm not putting pressure on my chest and it ends up with more chance of me flashing her.
Normally I'm good either way. I've visited several therapists of both sex that did a good job.