I saw Judas Priest on the Screaming for Vengence tour on Halloween night. It was in a rather small venue (Arlington Park Race Track), so there were maybe 2,000 people there. The jersey I got has the Hellion bird on the back riding a broom with a witch hat on, and it says, "Trick or Treat Vengence." On the front is the same bird, but instead of the witch thing, it's carrying an evil looking pumpkin, and it says, "Screaming for Halloween."
I've had Priest fans offer to buy it off my back. It's way too small now, but my wife still wears it.