I hate to admit it, I definitely know girls who fit this to a T. Some are in my house, some aren't even in sororities (but talk bad about girls who are in sororities).
I can safely say that I've never been on the "Walk of Shame". Part of it was my group (most of my central circle of friends aren't Greek and don't do the bar/fraternity party hookup thing), and the other part of it was that I started dating AlphaChiBoy (tee hee) second semester freshman year, so I didn't get to experience that scene. My campus is so small that everyone would see me walk across the green separating the fraternities from the sororities, so maybe that's another deterrent.