Yep, I'd be one of the women.
I'm 5'10" and usually ride a 57 or 58cm bike. I'm, looking for a women's bike for some shorter bar hops and to cruise around in a skirt a little easier. Besides, it sounds like a great excuse to get another bike!
One think I'm wondering about mixtes. In my (limited) experience, I could find a tall enough mixte, but the trouble was in the length from seatpost to head tube (ie, top tube length). That always seemed a touch short. Is this normal?
I'll try to measure my Masi this eve to get a feel for how long the top tube is one that.