Hey, shoot darn,
I'm in a therapy group where 75% of the ladies are non-passable, with a good 50% in the category of no-way in a lifetime will she reach that stage. Most of the ladies have male voices. Some have transitioned and still retain their masculine voice.
It is their voice--mostly--that causes trouble. People are taken aback by their name, or feminine appearance, that doesn't jibe with the voice.
Whilst listening to them explain their experiences, I view them all as women, even the ones people would classify as truckers in a wig and lipstick.. why? because of the personality.
So with first impressions, I'll see them as male. Hearing their voice: male... getting to know them... female.
I think I am fairly open-minded, and to expect people, even us transfolk, to react (initially) to non-passable females as female is very unfair. Put lipstick on George W and what do you see? female? I think not.