Elite Police Tactic Is Incredibly Dangerous

I can all but guarantee your local SWAT team has never employed this seemingly effective, tactic to get its officers to higher floors of buildings on-the-sly. This maneuver clearly takes a lot of practice and seems to be super effective. I would assume the danger-risk is too great for Western police units to employ. Perhaps they should at least keep it as an option to have? What do you think?