Interesting. I don't think straight guys could get away with this. It would seem a bit strong to come onto a woman like this all at once.
I don't like for men to hit on me at all. On the one hand it's flattering, on the other hand, it makes me feel out of control and off-balance. I have learned that guys don't seem to respond to subtlety, and so I have learned to be direct with them. If, on the other hand, a man is very very subtle with me, and I'm interested, I will be very direct with him. That works for me. Of course in this case I'm talking about complete strangers.
I ran this by a friend of mine, and she said she agreed with me that men are pretty direct with us all the time. How else is it going to happen? Men are always asking for a name, a phone number, an email address. Men say things to me like, "We should get together again sometime soon." I think these are relatively direct. There is no other way for me to interpret it other than "I would like to spend more time with you as soon as possible." I have to asssume the guy likes me. I'd prefer he just give me his intentions right then so no one wastes their time. Usually, this doesn't happen so I say, "Are you flirting with me?"
I think people need to give up a fear of embarrassing themselves. It's crippling.