Comment 11 for bug 1383863

Just in case: here's a link to instructions how you can add this to the launcher for inkscape:
http://artblog.mentalguy.net/post/62699485181/psa-how-to-fix-pressure-sensitivity-in-inkscape

(disabling the overlay scrollbars also happens to work around another conflict in inkscape which prevents pressure sensitivity to work with tablets on Unity)