You could use it on just about any glass surface.
A lot of guys use it for the water-fed-poles when they are cleaning windows up high and do not have the lift, can't repel down or don't have the swing stage.
They have water fed poles up to about 70' or 80' now, my friend has one that is carbon fiber and very light weight and it is sections that you push together and it goes to 60' high.
Some guys use it to wash cars so you don't have to dry them, they will dry spot free.