Having played so many years at the organ, I tend to finger chords in the way Serge has said. It's easy to change chords with minimal hand movement. But, if you are using APC, the bass note that results may or may not be what you expected. It still sounds OK to me though. Listen to a diminished chord with different fingerings with APC. You will readily notice that the bass line depends on the inversion that you use.

Roger, I have never used the basic mode. Can you play a major seventh in that mode? Or a 7-5 chord?