I saw a great young band in Destin last week called Good Enough for Good Times. Two guys from Galactic (bass and guitar) and a drummer and keyboardist also from NOLA. Keyboard player played a chopped A100 into a Leslie 147, and a Rhodes Suitcase... period.

Portability is whatever you are comfortable with! A 45 lb. G70 seems a deal compared to that rig!
An arranger is just a tool. What matters is what you build with it..!