Yes, I've given that some thought, michael. I'm not that fond of the classical position for sitting...although I'm trying it out some, and have sort of partially adjusted to it as far as how the arms are positioned.

When I play standing, though, the guitar is positioned just right, just as you describe it. And, yes, it does help to reduce fatigue and keep the thumb behind the neck.

You have to wonder about those "cool" young rockers who play the guitar hanging down around their knees... ;-) Talk about BAD position! But it looks sooooo coooool.