VividExposures: I played around with the new Surface Pro 3 today, and I was very impressed with the experience. I tried to imagine using the "pen" in Photoshop and Lightroom. I am assuming these devices all just give up the pressure sensitivity levels of a dedicated Wacom tablet.
The default SP3 pen pressure curve in not sensitive enough at the low end, but the curve will be editable soon. I like it a lot more than the Wacom tech in the SP1/2: no latency, no corners problem. The display is fantastic.