I'm using this for my FF linux which doesn't support touch screen gestures yet. I'm using the experimental left click to scroll option seing how the touch only has that capacity in FF. It works more or less smoothly and alot of effort has been put into this extension. My only issue that to get left click scroll you have to sacrifice some of the ability to highlight. It would have been nice to have a non-keyboard centric way of disabling the scrolling, a button for the top bar for example.