I watched many players use the G cord and have seen it being played 3 different ways.
I watched a U tube of Paul Larson and I'm sitting here waiting for his strings to break.
Sounds like he's using nails.
He plays the standard G cord from what I can see and it also looks he is just using his thumb and first finger for finger picking.
I just try learning all of them so if I run into a few players I know that i'll be able to play like they want me to.
BOB