I was going to make the same observation... they either both tilt inwards, or both outwards. I don't believe I've ever seen someone do it where they both point in the same direction... at most, one stays forward while the other moves.
Watching that guy check for the hose... a simple blind test would be to blindfold him, and have him walk towards the hose placed at a random spot in the driveway. His rod seems to be very accurate, so he should have no problem doing that, and 10-15' worth of space should show whether or not he's fooling himself.