I saw it last Monday (11/7), and both Nick and John came out after the show. The stage door wasn't crowded at all, the wait was about 15-20 minutes, and they both signed and took photos with everyone who asked. I don't know if it's like that all the time, but that was my experience. I loved the show, and I hope you get a chance to see it and meet them!
"I have maggots in my scrotum!"