Dave Smith Instruments SYNTHESIZERS

I know that you can add an Evolver desktop unit to a PEK to 
achieve 5 voices of polyphony.  

In this sort of setup, do the controls on the Evolver desktop unit 
still work?  I mean, do they serve as additional controls for the 
(unified) 5-voice Polyevolver Keyboard.  For example, could you 
set the desktop unit to control the tuning and waveshape of 
oscillator 1, while the keyboard controlled the same for oscillator 
2, and adjust both simultaneously?  If so, what happens if you 
set the desktop to control oscillator 2, the keyboard to the same, 
and move both fine tuning knobs simultaneously in opposite 
directions?

Also, the desktop unit has indented knobs, is that right?  (All of 
them or just some?)