Heralds are people too. Mount them up!
And not in a dirty way...
Ever since my first time playing this game, I was LOVING having my herald following me around for companionship, but he was always missing when I mounted. He just... vanishes, yet his vitals are still showing. I think the herald shouldn't vanish. He should mount up when we do--OR at least make him ride on the back of our horses. He's not a regular pet; He's not a lynx or a bear, so I know he's quite capable of riding a horse.