So, you went 16-21 years after the changeover, and many of the kinks must have been worked out. Maybe it was a good scene for you dating-wise. Lazio probably went in the first few years of male admission, which was ground zero of the Second Wave of strident feminism.
Yes, I think Lazio was the first class of males at Vassar. Must have been a heck of a time!
I believe Vassar is officially androgynous now.