It has been pointed out numerous times since this was released for Windows 10.... they have not added use of the button on the pen. It makes using the device as often intended (in tablet) impossible for many features like clone. I'm glad they could make sure to have this working for the iPad Pro, but a year later we are still begging for this to be fixed. This is embarrassing.
Totally agree. There needs to be some major optimization for the Surface line, especially the Surface Pen. Can't use the Surface Pen with the Surface Book if you have the keyboard detatched, and using the pen with it attatched is a cramped experience. Really need this addressed.