I still keep the guitar pretty low, esp. compared to most of my buds (who've mostly moved on to jazz playing).
OTOH, when I do performances, I tend to be a wee bit more high energy than they are...
Mind you, I've moved into singing a lot more, so most of what I do is cranking out the chords; when I'm lead playing, I don't have to cuddle up to a mic so I can change my posture to suit.
My guitar's centre is a couple of inches below my belly button... of course, when I first started at sixteen it was practically down by my knees.
Yeah, I forgot; I also get a big charge out of vamping on a good groove, but it's hard to play really good funk while you're singing, so I tend to keep it Very Simple Stoopid.