Also, I don't know anyone who's done it. That said, I think it's possible to do if you land the right forms. And/or, you have an enormous amount of time to devote to it. At low levels most shifter forms are outperformed by re-gear warriors, so that bleeds time. Many middle tier forms are pretty similar and are too 1 dimensional to be effective in ranking, as in, they cause a bunch of damage but eat a ton, or vise versa. Less top tier forms are this way but some still are based on focus.

Overall, I think I could do it but don't think it'd be very fun.