As the maintainer of homebrew-php, I'm definitely interested in seeing how this affects popular taps. I'm guessing there is no change, but would be nice to see some homebrew love.
After we've got the tools working on core formulae I see no reason why we couldn't also test popular taps too (certainly ones like yours that are already part of `brew search`).
Sounds like a worthy project. Pledging my support now.