It’s very slick. I’ve been working with it for a few days inside FCP and the multi-touch gestures are definitely nice. There is a little bit of a transition period, but once you force yourself to use the trackpad instead of the keyboard shortcuts, you’ll definitely save some time. One specific benefit I have noticed is the ability to zoom in and out of windows even if they aren’t the active window (ex: if the timeline is the active window, just move your mouse over the canvas and pinch to zoom without making the canvas the active window).
-Bradley