It works just fine if every outfit is only assigned one Actor to have a unique appearance, and unique costume entries do not interfere with one another (such as an entry for 'Robe' on Actor1, 'Leather_Armor' on Actor1, 'Heavy_Armor on Actor2). The only issue comes up when 'Robe' (or any other armor) is given custom appearance for more than 1 actor.
Also, thank you for yet another quick response on bugs! Always impressive how quickly you respond and repair/add to your plugins.