The person I ended up meeting with was a young (under 30) and very polite man who gave me very courteous service. I felt I needed to preamble our discussion by mentioning that I was transgendered, but without missing a beat he said that someone there at the branch was also trans plus he had already dealt with other customers like me.
In ended up being a very positive experience indeed and another indication of how the world is getting smaller and more savvy everyday. So with very little fanfare I went about my business, once again confirming that I need not second guess myself when it comes to these matters. Just get dressed and go out the door and don't give it a second thought.