So you mean that Inkscape's pressure sensitivity works on a touch screen? You mean like with a stylus, or do you mean using a graphics tablet's pen on the touch screen?
For pressure sensitivity to work *at all* the screen/pen must support it. Presently there are no desktop or laptop computers that have touch-pressure, so to use pressure at all, you need a stylus, and moreover you need a stylus that supports pressure sensitivity. Inkscape works with Wacom Tablets, which is what most people in the profesional graphics world use for digital illustration. They also make components for laptop screens for Lenovo/IBM tablet computers (selected models only). This is what I have in my x220T. Yes, it works great. :) The stylus can also be used like a mouse too, so you can tap-drag control handles, and points, etc. You can also do this with your finger on my screen, but, well it sucks. :) For the benefit of using your fingers comfortably on the interface Inkscape UI would have to be re-written with everything large enough, which means you can fit less on the screen, which means hiding a lot of options... it's just not worth the effort, imho. There is nothing to gain except a substantially slower workflow, and endless hidden menu navigation to cram in everything that makes Inkscape the graphics powerhouse that it is.
There are features that could be added to make Inkscape a better illustration program with a stylus, though.
For example: 1. Free-canvas view rotation: great for comfort and producing an easier stroke without kinking your wrist around. Just pinch-rotate the screen. 2. Pen-button tool palate (Like in Krita) 3. Tab to hide everything except the canvas (currently f12 only hides dialogues)
I think people are probably asking for Inkscape for Android and iOS, but the truth of the matter is, neither is a good enough OS/platform for Inkscape. Time is better spent ignoring the tablet fad and improving Inkscape as a pro-grade desktop application, imho.
Maybe when more tablets get stylus support it could happen, but finger-fumbling your way through a vector editing program isn't anything professional, or even hobbyist artists are going to enjoy very much.
No, I've never used a touchscreen at all (I never even had a smart phone,
much less tablet). (I'm technology-deprived :-p)
Okay. :)
-C