I've met the band. In fact same time that Lupe did.
Scott, he was standoffish, but this was getting towards the tail end of the trip. He did get pictures taken with him, shook hands, autographed stuff to the fans that were nice. He was nice back. If someone was being pushy, Scott wasn't cordial back. Charlie didn't shake hands I think because of arthitis? But he still signed and took pictures. Rob, wow, he ruled. He shook hands, took pictures, I even had one I took of him and his g/f or wife. I was introduced to him as a fan who flew down from Washington State to see them in Texas and he was real nice guy. I watched concert from the side of the stage and he would during changing guitars between songs talk with me. "How's the concert so far? Is it kickin ass for ya?" Met those 3 before the concert. Frank and John I didn't meet till afterwards. Rob was the first out after the concert and he met the fans out back behind the venue. Scott walked out, saw how many fans were there and they were pretty much causing a mosh pit out back that he said, "fuck this shit" and went back in the dressing room until they had the fans out back moved back. Frank came out next and he was awesome. When told I flew down from Washington, he was like, "why the hell did you fly to here?" and we talked some. He told me they tour back up in Washington and told him I didn't care if I got backstage, I'd go no matter what. John came out after him, told him how I saw the concert at the Gorge Ampitheater (where the fans started moshing in the metal folding chairs that some idiot decided would have metal chairs in the mosh pit spot and because Anthrax was playing then and they "incited a mosh pit" that they had to pay for the chairs) He was like, "you were at that show? That venue kicks ass, but the management there sux ass." and he was nice as hell. Talked to me a little bit about touring back up there.
Overall, they were nice if you were nice back and weren't being pushy. Now, some days they might not be like that, and some days they might be better. But in my one time experience with them, they were hella cool.