There are some threads on here. I did one on the University I advise at in the west at a PAC 12 (then PAC 10) school you can find it here.
http://www.greekchat.com/gcforums/sh...d.php?t=115881
Regionally, a lot of things differ and you can guess that is true with recruitment. You are right about Lilly not being popular out west. I know of it but have never owned a piece myself. Things do tend to be a bit more casual out west but appearance is important for our recruitments too. You will find tradition also varies from school to school.