
In general Paintstorm works well for me on Linux Mint 18.1 64-bit KDE and there is no problem with installing it.
It looks like PSS works the same as Windows version, fortunately. Pressure works properly for my Wacom Intuos 4 tablet.
However, there are two small "issues" to mention:
1. When adding additional, external brushsets (custom brushes in PSS format), program loses (?) their names, so they are installed and works OK, but its general name (given by creator) at the top is empty. In Windows there is always a name here.
2. Differently in Windows (and Krita in Linux) PSS doesn't show request windows (e.g. Exit program? Do you want to save picture?) in front of a work screen, but behind it. So it looks like PSS on Linux "hangs" for a moment while it's waiting for user's input in the background (i.e. one has to change active program by using Ctrl+TAB). It occurs in my Linux system at least.
Besides, it's fantastic you keep PSS updated for Linux version as well! Good luck!!!