If you lift up your sun visor TO BLOCK THE SUN and it happens to block the camera , you might get a "talking to".
Ultimately , the cameras will be like all of our other equipment - it will break down , have a problem , you write it up , and it may or may not get fixed.
A couple of days after the install crew swept through , there were wires hanging in a lot of the trucks. And in a few others the GPS antenna came loose. I know of a few tractors that simply have a camera and shift monitor that won't come on - great job , great investment.