It does work – myself and a few others have tested it. The game now runs multiple effects files – and can be individual for each class mod.
Current class mods/variants:
Shadow-Dancer, Maiden, Paladin, Lord, Blackguard, Falconer, Apothecary, Huntress, Baron, Diablo Pack (Necromancer, Sorceress, Monk, Demon Hunter, Witch Doctor)
DOWNLOAD FROM: http://www.nexusmods.com/darkestdungeon/?
My personal Art work and Novels: www.stevenmouland.com