The jog wheel works fine for me just press the select button while moving the wheel to change from kits or projects /instruments .
As to the tune mode its just as easy to change the tune using arrow buttons as you can still play the range on the pads.
It works, as in it moves. But it's A, very slow to react. B, sensitive and easy to open kits that aren't needed, and C, needs two hands to scroll through the plethora of menus. Which even then it does't do that successfully.
Once a kit has been opened, it stays on the library. Why do we want that to happen? It should ideally return to the screen you were on or return to the main GUI.
It also only works for one action, whereas on the software you have two actions (either side of the large jog whee itself). This used to work in a previous version but has since been removed for whatever reason.