Billy Corgan didn’t get to be Billy Corgan without a serious sense of the perverse, and these days it’s there for all to see. It’s in the little things; like his tour stage design of grotesque twisted reptilian metal, Alien-esque; or his insistence on arriving on the Ambassador stage in a trenchcoat, winter scarf and knee-high army boots, while the midsummer heat has everyone else in the venue evaporating.