I've looked into touchscreen support on Linux and it was very disappointing. You can fiddle most things to a workable level eventually, but no matter which implementation, there does seem to be a lack of integration for the virtual keyboard, i.e. it doesn't pop up when I touch an input field or won't go away when the input field loses focus. Overall it was pretty awful. Since I wanted to use the device in tablet mode (without hardware keyboard), I have to run Windows for now :(