[font=trebuchet ms]Definitely! Nothing like an acoustic 12-string to teach you the difference between stroking a guitar and chopping at it. When I was teaching, I found a 12-string to be a very useful aid in showing the importance of pick angle and smooth wrist action. Subtleties of attack tend to stand out more too.

And callouses with double-ridges are uber-cool![/font] :cool: