Any point to keeping CN Anomen?

I made Anomen fail his test just to see what would happen, as I have completed the game with him as Sir Anomen before. I was hoping he'd become an embittered loose cannon, maybe get a new sound set, but so far his interjections seem the same as he was before he took the test.

Is there any new content (dialogues etc.) I can expect from taking failed knight Ano along?