Got to compromise on the number of keys, zuki. (And the piano sound and the organ sound, too, IMHO )

Of course, you CAN gig live with anything you got, but how many of us DO gig 'full live band' with an arranger? Quite a few take WSs out on band gigs, and keep the arranger for solo gigs.

And sadly, many don't gig live band at all...