They're pretty cool. I'll have to check it out a little further when I'm not on dialup.
My wife and I saw Black Diamond (another tribute band) in a bar in Cheyenne about a decade ago. They had the pyrotechnics and everything. It was a fun show until the pyros at the end sent hot, molten stuff bouncing off the low ceiling and into the crowd. We made our way towards the exit when one chunk embedded itself in the ceiling and continued to glow.