MoP cloak effects should be transmogable - I personally would love to be able to see the effect as either attached to the cloak or unlocked as a seperate option akin to
Mists of Pandaria's Legendary Questline - Wowhead
Mists of Pandaria's Legendary Questline - Wowhead
Mists of Pandaria's Legendary Questline - Wowhead
Wrathion's Legendary Questline - World of Warcraft Guide - IGN