Ahhh, I love being correct. I knew Tobi had Obito's eye as soon as Tobi said something about Kakashi's jutsu being useless against him during their encounter with Sasuke and Team 7. I know I'm not the only one who called that fact but I'll be damned if I'm not going to gloat about it.
While this fact being confirmed might give the Tobito people more evidence, I don't think it does. I think if Tobi was Obito, Kakashi would have indicated that he knew his exact identity, not say "where did you get that eye?"