I was looking at the Smittybuilt that was on ebay and I understand that you can install that and keep the tow hooks. It is a bumper guard or what I like to call a push bumper (covers just the middle portion of the front bumper. Unfortunately before I made up my mind to get one it disappeared from ebay but I would think that they would be available somewhere.
The Westin safari bar mounts between the tow hooks and the frame, so you get to keep the tow hooks. Although, if you install lights on the bar, they will block the tow hooks.