Building a pickup with personality is tougher than it sounds, and so the 2020 Jeep Gladiator was always going to be divisive. Brash, unapologetic, and digging enthusiastically into a lengthy history of Jeep 4×4 heritage and iconic styling, the Gladiator could be at best a new truck hero, or at worst an overdue pastiche. Buckle up, because things get bumpy. …