In the most recent update of Fusion 360 for OSX the Shift + 2 finger swipe direction has inverted. It used to make sense and now it is completely backwards. It is opposite of that of the orbit view while holding Shift and holding the middle mouse button. Not sure why this was changed or if there are plans to change it back, but it seems like a simple preference check box would solve this and let end users choose the direction they want the orbit axis to move when swiping or dragging the mouse.
Thank you!