Wow Mike, excellent dead thread revival work...
 
I think of my action as pretty low but I don't really have a reference.  Fretless is similar, not too much growl.  And my string spacing is also tighter than normal, almost 5 strings on a 4-string neck.  I guess I play pretty light and I'm not a thumb guy so this is what works for me.
 
Jimmy J

This is one of my favorites...
 
 
http://music.aol.com/video/james-taylor-fire-and-rain-aol-sessions/james-taylor/1354213

Great video!!!

Yes, very, very good.  I've had the refrain stuck in my head for days now.