I have used ladders for over 20 years & ALWAYS will, thats what proper window cleaning is all about = when you can say youv'e used mops, scrims, leathers, pads, blades & the like,,,,,,
NOT just pushing a pole up and down windows.
However, most of my work is done using the poles, but i do appreciate window cleaners using ladders, as i think its a skill to be able to use ladders & clean windows properly.
Whatever suits you !