I'm playing a Holy Priest as a main but I also like playing Shadow. The way I see it I'm pretty much forced to leave the loot specialization at Holy for the rest of the expansion because there's always a chance that a Legendary might drop. That leaves me with two problems:
- Not getting any rewards for Shadow from World Quests
- Not getting any rewards for Shadow from Dungeons/Raids

That makes it pretty hard getting relics and trinkets for Shadow. How are you doing this? Do you just not care about the Legendary drops? I wish there was a way to tell the game that all of those items should be for one specialization but everything else for another.