6700 car mount readable in the daytime?

[notme23]

I know the 6700 has crappy sunlight readability. my question is does anyone have one mounted in a car dock? I was looking at the seidio G4600 or G4500 for my car. My concern is, will it be readable in the car for use as a NAV device? Also is it worth it to have the one that allows slide out keypad? I can always get an external gps reciever for it or i can get the one that has it built in, but no slide keyboard.

Any thoughts on the sunlight or slide no slide docks?

Thanks.