You wont get them naturally, but edited files or starting characters can have opposite traits, Sancho of Castile in 1066 start is an example, he has both patience and wroth.Are Quick and Genius really mutually exclusive? I've edited saved games (for RP reasons of course...) so that characters would have both genius and quick, among other traits and they don't "cancel" out like a character with Chaste and Lustful or Gluttonous and Temperate would.