Here's a small discovery/tip: I recently settled on bumping the pen behavior back to the Win8.1 days by disabling touch input when the pen is in range (it's in pen settings), and don't think I'll be going back to the default way for the foreseeable future. The megaton I wasn't aware of until now, though, is that the Vaio shortcut menu still works(!). It still responds to touch commands! Which happens to be exactly what I needed! I don't know if this was by accident or foresight on the part of Vaio devs, but it has lead to an overall improved comfort for me, since I was previously a little constrained in the way I could hold the pen without accidentally registering touch inputs with my wrist (even though I have it set for my hand orientation). Try it out, see if it improves your workflow.