[Mr. Jelly]

To me it's the way to go. I know allot of people that run an acoustic amp on stage as a guitar monitor. Usually you plug into the amp and run an out signal to the board. You can face the amp right at yourself as it will be ran at low volume. In this way you can control your guitar sound in any way you want. The sound guy can do whatever he's gonna do god forbid. Have the sound guy keep the guitar out of the monitors.