It also punishes tower shields quite heavily, I've seen it give AC too on other servers. And that was always a game of use tower shield at an early level and then switch to parry later. It would get pretty crazy if you combine tumble, and parry even though I agree the fact that parry is just absolute garbage is a little sad. But this solution without some hard requirement for dex would result in all the martial classes taking it for immense AC.
