I remember the Fight gig I went to back in the 90's was selling Judas Priest shirts at the merch stand, it just didn't feel right. Marty's own shirts at a Megadeth gig is not quite the same but to me it's close.
The best story I remember reading about the reunion, and it may not be entirely true given the way both sides got upset, was from Nick about the dinner they had. Apparently Nick had been 'unofficially' back in the band for several weeks, they'd done some rehearsals, they'd talked and they were talking about taking it on the road. Marty was yet to say yes to anything and it was looking like they'd go ahead without Marty but then out of the blue from Japan Marty says he wants to sit down and thrash things out. They decide to meet for dinner and have a chat but when Marty turned up last with his manager in tow Dave got all shitty. Nick claimed something along the lines of, "Dave was put out by the fact that Marty brought along his manager to a dinner that was just supposed to be the original RIP line up so he stormed out and refused to discuss things further."