I wouldn't climb that skinny pole that is the final 50 feet if it was to get on the roof of my two storey house. I've got clammy hands after watching the video. Just when he arrives, another nerveless fellow arrives. I wonder what they get paid. They would be uninsurable.
They would need a totally reliable weather forecast for wind and storms. As he says, there's no quick way down. I would have thought a parachute would be a good idea for an emergency descent- there would be enough time to get it open.