This subject brings up some interesting situations. Though not involved with your industry (see my profile) we actually have 2 transgender employees where I work. To make it more complicated they were father(S) and son(L), which does raise some interesting questions.
Both have the same job titles as myself and both are still carrying out the same duties as before, which in the case of S means out of hours standby (our standby is from normal finishing time at 17:00 until 08:30 or all day Sat & Sun)
What was interesting was the practicalities when S began the process, the problem in the large office she was based in at the time was from female staff who, initially, were uncomfortable with "a bloke wearing a dress" using the female toilets.
I would add that our employer put no difficulties in their way.
The male staff were I would guess bemused.
Some years down the line they are both accepted for who they are and the jobs they do.