Franz should ask for Charisma checks

I’ve had Franz ask for Perception, Investigation, Arcana, Stealth, and Medicine checks. However, after many hours of gameplay as a face character, Franz has never asked for a single Deception, Persuasion, Performance or Intimidation check. Now, I get that if you roleplay a social encounter well, some GMs will reward you for that, perhaps lowering the DC of the encounter or removing a check entirely. But if your face character has invested proficiencies into these skills, it’s also nice to be able to use them.