I'm using Affinity Designer on a new Surface Pro with a pen. I find if I touch the screen with my hand while I'm using the pen, I draw when I want to. This doesn't allow a proper sketching use case.
On Windows, software has the ability to support "palm block", where the palm is ignored and pen input is still allowed.
Does Affinity Designer support "palm block" or plan to implement it in the future? I think Affinity Designer would make an amazing sketch tool for pen artists.