Our last car was a Territory Ghia with the reversing camera. We got very use to using to using it. We drove a couple of D4 demo's one with and one without the camera.
We felt blind without the camera on the D4 and the wife wanted a camera on the D4 as much as I did. I do have a bur under the saddle over the combined sat nav option. We did get a discount on the car that was greater than the combined option cost anyway.
The camera is great for getting the tow ball right under the hitch.

