One of my very good friends (and closest sisters) joined Alpha Chi when she was an RA. She said it was a little weird with all her hallmates going through with her, but she knew a lot of them and was happy to share her new member experience with them. I know at my school, she would not have been allowed to talk to people on her hall who were currently Greek except in matters of residence life. She was an RA over the next few years, and she said it was a great recruiting tool. Good luck