Not quite the same thing, but I get clocked as female fairly often when presenting as male as I am not full time yet, or even on HRT for that matter. Just today even as I was going into a local retailer with my wife the guy taking donations out front says 'hello ladies'.
After this my wife was musing that they probably think we are lesbians (my wife has very short hair, and was wearing jeans and a t-shirt). She wants me to go to the goth club in some of my women's clothes soon, with weeks like this (3 times so far this week people have "mistaken" me as female) I might just do that. I have to admit it has me very excited to get on HRT and do some LHR, I just need to get the money up.