if your asking from a is it quick than trad method...yes it is
i take about 10 mins on something like that. you have to remember, how much easier it is and quicker, ie, if theres 3 windows upstaires on front, with ladders, youd set the ladders up, up and down 3 times, with the pole, you errect it and do the first window, move it along to the next, then to the next. simple, no faffing about.
i go across the tops of the window, up and down the glass, rinse, then a zig zag down the glass and another rinse, most of my windows sheet now so all this cleaning probably isnt neccessary, but i have put most of my prices up and picked up new good ones, so this little time longer that it takes isnt a problem.