Two other features that are on the MkII, are the Pitch/Mod Joystick and ‘Xpression’ Pad which are also completely custom assignable.
The Joystick is pretty nice (although mine squeaks a little), first of all it allows you to change the behaviour using a switch on the bottom of the device. It can either snap back to the starting position, or remain free on the y-axis. The accuracy takes some getting used to, but can be a great asset during live performances. The Pad however, doesn’t really work like you would expect it to. It takes a relatively high amount of force before it registers any movement. As a result it’s not very accurate and I wouldn’t trust it during a live performance.