yes i know. It also works, when I do the tap and hold thing with my finger.
For the Pen it sadly does not work for me.
The Surface has one of these pens where you have to hold a button and then tap the screen.
So its not a righ button hold, but only a click uppon contact.
One quick solution to the whole problem could be to keep the SpeedDial open when you just tap the s key or do a right click. (Similar to how it works, when you open it via the Menu)