The main plot revolves around soul stuff and constantly refers to the powers of ciphers, watchers, and animists.
You can't play as an animist and not matter your class you become a watcher. Which makes me wonder if playing a cipher will synergize with the watcher stuff or be rendered completely obsolete by it.

since it seems like your watcher powers let you do whatever you damn well please to souls regardless of your class. In particular I am wondering about plot stuff happening rather then combat.