Anyone use one of these for rear view?

[TheGanzman]

I installed the 8"X10" variety "as is" at the very bottom and center of the window - works great, once you figure out the actual "scale" of how close a vehicle REALLY is. Hell, the rear backlight isn't much use anyway, might as well have a fresnel lens in there!

[Marlin]

I went this route, and it looks super cool Dual video inputs, fully adjustable, and its a mirror and a screen.