Anybody used these kickpanels?

I figure it will give the best of both worlds...when I want tunes I can hear them (already have 6x9's in the back and will add a small sub and amp combo) but when I just wanna cruise and listen to the motor I can do that too! I can't ever see owning a car without a radio....I even miss it when I am riding and have worn my ear buds/ipod on occasion.

Dennis