Got all bodyguards to max rep, and everyone except Leorajh seems to get a new appearance when you use them as a bodyguard.
Defender Illonia: Tier 17 paladin
Delvar Ironfist: Tier 17 DK
Tormmonk: New sword, looks like Ka'graz's Burning Blade
Talonpriest Ishaal: Gets a shadowy aura
Am I missing something? Seems like the poor cat guy gets nothing