Waterless window cleaning???
It's been around since the year dot.
What do you think we used in this country before squeegees took off?
The first thing I was taught as a raw tumbler was how to "rag".
Most of our work was London "three decker" schools, with zillions of "stamps" - tiny georgian style windows. The only practical way to clean them was with a scrim - admittedly damp, but only just.
A good two man team of "raggers" could do an entire school between them in a day, and that included all the insides and partitions as well!!
And they gleamed, at least until the night, when you could see every ragmark by the light of the street lamps

Cheers,
Ian
PS - window cleaning with a wax based product? What do you think Windowlene is? And as for staying cleaner longer - the wax surface
attracts dirt. Haven't you ever tried cleaning windows that the housewife has smothered with the stuff? That was the whole idea - they looked good for a week or so, and then they started looking terrible, so more Windowlene was used to make them look good again, so more Windowlene was sold!!