Corel Painter 2017 on a mobile device

I use Corel Painter 2017 on my desktop PC and on my laptop.  I want to get something like a Surface Pro or a 2-in-1 tablet to run strictly Corel Painter -- something I could do plein air digital painting (yeah, I know, it sounds sacrilegious).  It would be nice to be able to paint right on the screen while standing outdoors.    I don't want to give up Wacom like features such as brush tilt, pressure sensing, etc.

I looked at the Surface Pro and Book today, as well as the HP Spectre and Lenovo 2-n-1 tablets.  All of these have pens available, but I fear they are strictly one tilt angle and one pressure value.

What recommendations do folks have?