Having switched from paper to MobileSheets for my music, I am now working my way through our choir recommending it to everyone! 

My device is a Surface GO2 and it works really well.  I have convinced my wife to switch from paper but she is in the Apple cult so has the iPad version.  

On my device the Surface Pen worked perfectly out of the box - draw with the tip, erase with the eraser.  On the iPad however I can't get the Eraser to work in this way.

• In Stylus Mode, the top of the pen works as a Pan tool
  
• If I switch Stylus Mode off, the top of the pen draws like the tip
  

I have 'Stylus Button Tool' set to 'Eraser' but that doesn't seem to do anything.  Full disclosure: the Pen is from Devia, not Apple.  I'm not sure if that makes any difference.

Is there some sort of configuration I need to get this to work?

Headwesty (Surface GO2 for Choral Music)

What that most likely means is that the eraser is being treated the same as a finger press by the iOS framework from that particular pen. That is why, in stylus mode, it pans, because if you drag with your finger, it should also pan. With stylus mode off, it behaves just like a finger which you can draw with. So there is no easy way to support the eraser of that pen in a way that wouldn't be detrimental to the general behavior of the annotations editor.

Mike