A lot of people go just to show off to an audience that they don't have at home. And a lot of people try and don't know what the fuck they're doing.
Sweep picking solos at high volumes is pretty much the equivalent of doing heavy shrugs and slamming the weight down every chance you can get.
4/11 Fear FestEvil w/ High on Fire
4/17 Electric Fucking Wizard
4/28 Mastodong/Clutch/Big Biz