switching the pen nib to eraser?

[Jane Mount]

Hi anyone know a way to set the pen so that the side button will turn the main pen nib into an eraser? The eraser on the back end is too old skool eraser shape, not precise enough. Thanks!

[#2]

maybe you can buy a Surface Pro 3 pen (there are two side buttons on the SP3 pen), one for the eraser. I don't like the latest gen Surface pen either. Using the back eraser button is a constant pain. No pressure, not precise, and you have to flip the pen to use the eraser - waste of time.