I look at it from my own perspective -- I have a hard enough time remembering names that it would be unfair of me to ask folks to remember two names for one person! And it would probably f*ck with my own head too much as well, trying to remember who I am.
Nope, I'm ok with being called by my given name, regardless of how I'm dressed. I still have XY chromosomes, and the same junk, under the makeup and pretty duds. I don't think I'm fooling anyone, anyhow. Just don't call me late for dinner.