Hi all, while my Korg keyboard does a pretty good job of imitating the
sounds of various instruments, I can never seem to get the guitars to
sound like they're being strummed. In my (simplistic) estimation its a
matter of rolling the notes consecutively from low to high (down-stroke)
and then high to low (up-stroke), perhaps needing variable pressure on
different notes?

So my basic question is, how would you produce as realistic a guitar
strum as possible using an electronic keyboard with the requisite sound
banks? Or should I give it up and just record my guitar directly (neck
needs straightening...)?

Here we have that problem again. I mean, how much are we trying to emulate things these days and getting away with it? I can tell a sampled guitar from expensive records pretty quickly, and it annoys me as fast. I _have_ heard _some_ with excellent results though - I wouldn't be able to tell if I weren't informed. Those are fine, but the majority aren't.

A keyboard cannot duplicate the feel and awesomeness of a guitarist, his guitar, and a Neumann off-axis, period ;)