Yes, lol I've noticed this alot. At 6 mo. Now and full time, I look in the mirror, how I walk and talk and nobody thinks to question me, and I've tried boy clothes and such and constantly have a male fail. Just like 10 minutes ago I went into truck stop to use bathroom and walked straight into woman's, with plenty of girls in there, and nobody blinked twice, and a guy followed in behind me and said "hey this isn't the guys bathroom", and turned and walked out as I stayed in and went in a stall, the other girls kinda started laughing. I finished, washed hands, and walked out. So I like to think, what would have happen if I walked in the guys bathroom and said "this isn't the girls bathroom" and walked out, would the guys in there have started laughing? I don't know. But I know that, yes it is getting extremely hard to see myself as a "guy". XD
On a side note, when dressed in "guy" mode, which is rare now anyways, that I still use a girls voice and I'm still called ma'am and miss. It just makes me laugh, lol.