In point of sale touch screens are faster to use than conventual screens. Windows 10 is made for touch.
I find it more natural to use. Rather than look at the screen, I look for the appropriate button on the keyboard then I touch the spot on the screen.
I want to do a particular function like "School booklist", I look for that on the screen, once I see it, I press it.
Well, right now one of our suppliers has reported to us that they have quite a lot of touch screens that they could not sell to the shops. These are commercial grade, so if you are interested in getting a touch screen, why not get one. Have a Black Friday special for your shop!