I have worked with both male and female Ts. I have issues with gender in general so it's not so much the sex of the T as much as gender presentation. I cannot work with and have huge issues with individuals that present overly feminine (lots of make up, hair done in a way that seems like they spend hours on it, pink,... ). Even as someone that is trans; I struggle at times with male-to-female individuals and would have trouble with most therapists that are MTF. Again, my own gender issues/bias with femininity.
At the same time, I can be afraid of some men; become puppy like with others as I want to be with like (impress) them; or be neutral all based on their energy.