Quote Originally Posted by Kraco
Orihime did what few others of the gang so far have managed to do: Get an Espada killed. It's a pretty good start, I should say, for someone who was pretty much labeled as unfitting for fighting. Such irony. But then again, there are many ways to fight, like Aizen himself has proven in the past.
Orihime wasn't really labeled unfit for fighting so much as Urahara wanted to keep her out of the action because he knew how special her skills were, and that they would attract the attention of Aizen as they did. I would assume if her skills are that desirable, that with some training she could become a fairly decent fighter.