FreeStyle,
I started out with the same mindset and used an expression pedal. I also have a set of Roland Midi Bass pedals that I use when I play the keyboard as a two manual organ.
The bottom line is that I now only use the expression pedal with the bass pedal/organ setup, and not when the keyboard is played as an arranger keyboard.
With the new organ voices of the KN7000, the keyboard sounds better than most full blown organs, which I use occaisonally for accompianment, ETC.
Otherwise, it's arranger all the way, and no expression pedal needed.
Regards,
Walt