I went to one. It wasn't for me. Everyone was super nice, but pretty uninformed. It was a minimal symptoms group and I don't think most people there had learned very much about MS. I never went back. I like the online version much better, but for some, the IRL provides more of a sense of community.

That being said, my mom loved her IRL group. It served a real purpose for her and gave her some nice friends that she could share with. She's not particularly computer savvy so that format worked best for her.