Earlier quoted context omitted.
What are you using multitouch for? I've spent the last 6 months with OSX as my main machine (not my first foray into OSX), and I use multitouch for scrolling and sometimes desktop-flipping, but only because OSX is designed that way. I could just as easily scroll with TrackPoint (I love me some TrackPoint) and use keyboard shortcuts to switch desktops (as I have on Linux in the past).
I use gestures for going forward / back in Chrome and for activating Exposé, but there are two main things that differentiate it: * Natural, responsive scrolling. After two-finger scrolling on OS X where it's so responsive that it's exactly like sliding paper over a table, nothing can really compare. Linux can't get to that point for a long time since it's limited to sending scroll wheel events. * Palm and thumb dete…
I don't have a proof, but this doesn't seem to be the case for GTK3 apps. Scrolling in Evince (GNOME's PDF viewer) and Web is very responsive.