Nothing. The only difference is Pokemon Sommeliers are people. If the poketch was introduced in Unova they'd all go redundant.So what makes a Pokemon Sommelier different from the Friendship Checker App. on the Poketch?
Anyway, Cilan's voice is OK, I guess. I like looker and his voice, and I have no issues with the voice actor, but I don't really care what he sounds like anyway. Although I did spend the whole episode laughing originally.. lol.
Who voiced Cress?