Leedogg, yea, your right actually. I get super stoked when there is someone ripping it up in a guitar shop and they are fun to watch, hell, thats basically how I learned the artificial Harmonic technique.
In this case, it seemed more like this guy felt an urge to kind of show me up. There were 50 amps he could have used and it was a big store, but he sits right next to me and cranks his amp up twice as loud (and twice as distorted) as mine. It diddn't bother me, I thought he was just checking it out for a few minutes, whatever, but then he sat there for a half hour just playing scales, aprs, whatever.
I've been in half a dozen guitar shops a number of times and I know how it is, that stuff happens all the time and of course if someone is looking at a guitar, they are going to want to spend time with it beforehand. And I could have just KRANKED up my $*** too, but whatever.

Not a big deal, and like you said, the dude was fun to watch!