A lot of people have this misconception that brush guards protect, but they don't. You get better front end protection from a hood deflector! If you're thinking of it that way your best bet is to put your money into things that will help you avoid a mishap like better tires, better shocks, etc. If you want to mount lights just drill holes in the top of the bumper.
Don't worry though, adding one will not make your tuck look like a 4x4...quite the opposite actually.