I dont have one, but im not a fan of the Roush. I actually bought a Roush front splitter from AM, because i thought it looked great in a few pictures. But once i saw it in real life i instantly changed my mind and returned it.
Not to mention the fact that you have to modify your stock splitter to install it. So its not like you can just "switch back" if you decide you dont like it, or end up needing extra clearance if you end up lowering your car