Hi simon, steve
I once tryed to squeegee lead lights not bad for 1st cleans a bit off mopping up though I found.
Another way I do them is GG4 in a spray bottle.
Lightly spray on window go over with a scrim and buff with another. found results much quicker and very clean.
You do need a few scrims at start of day though get through 2-3 a day if ragging all day.
I cut a 1 1/2 hr job down to 1hr. So suits me
Another advantage is water being used to clean window is clean.
Alan