(Very small)
Samurai
Weapon and Armor Proficiency: .. A samurai is proficient with light and medium armor.
Fitted Armor: A samurai who purchases a set of heavy armor may take a full day (8 hours work) to have the armor prepared for his use. The samurai is proficient with each specific suit of armor fitted in this way.
Ronin: A samurai who becomes ronin loses the use of the Fitted Armor ability and gains one extra use of Resolve per day.
I'm just groping towards a way to represent the concept without having an "order of the ronin" or giving him more and better pools of Cancel Special Ability tokens.