I'm also satisfied with the Furrion. I use a couple of rubber bands to hang the monitor on the rear-view mirror. Love seeing what is behind me while rolling down the road and it is a big help when changing lanes.
I would also be interested in how you would tie into your TV display. Tying into mine MIGHT be possible, but it would only display when backing up, so missing a lot of value. Unless you are backing up single-handed, I would be leery about depending on a camera. It's the DW's job to help with backing in. Plus I GOAL a lot!!!