I think it's up to the GLOs as far as their policies on letters, because we all function differently. I don't really have an opinion on if it's okay or not, because really, it depends on the GLO.
OPhiA is a service sorority. As such, we hand out bids to
anyone who asks for one (males included). Because we're not primarily a social Greek, we can't discriminate. Likewise, any pledge who meets all pledging requirements is voted in to join, no exceptions.
For us, rush is more like a one-night info session, and I missed it (but I'd still done my research on OPA and knew I wanted to join). I was pinned without ever having met any of the sisters in the chapter.
Our pledge process requires pledges to plan their own service projects (4) and a fundraiser, in addition to quizzes, learning our history, and local requirements. All pledges must make at least an 80 to pass the national history exam (and, thus, to be initiated).
So for us, as a cross between a service organization and a Greek sisterhood, it works for us to require as an organization to only allow initiated sisters to wear letters.
