Well, there is no question, 'Spaw. Acoustic sound can't be quite duplicated by a synth.
The thing that intrigued me about this one, which was putting out the sounds of electrified guitar strings from one hand and of a slide guitar on the other, was the intricacy he was getting out of it by playing with both hands -- one set of sounds each.
But when I got home and picked up my old martin it made sounds he couldn't do, and I'm happy with it.
This guy was making it sing in its own right, and I hadn't seen one before.
I tried that sliding it across thefloor when the guy wasn't looking and it started making this keening sound like "Where's my Cletus?? Where's my CLEtus??". But I had to stop cuz the guy came back.