I did know of one girl (about 3 years ago) who wanted to pursue Pi Phi. She hasn't been on GC in ages, and when I emailed her, no reply. I assume that she ceased pursuing it.
I have known of other(s) pursuing Pi Beta Phi, but again, because I am on GC very seldom now (my job is overtaking my life, ack!!), I am not sure how it is going.
As for the Gamma Phi Beta thing, I can tell you that Cele the Superstar is playing a big part in that!
To answer the GC'ers who are AOII, Alpha Phi and Gamma Phi Beta these ladies have certainly been helpful in getting their groups mobilized to at least be open minded to MEET a prospective AI and see where it goes. I think that might be a part of it.