I had a staff that I wanted to see if I could get restored from a Deepholm quest I completed earlier in Cata. It's a unique appearance, there are others with the same model, but not the same colour. You could only get this one colour from the quest reward.
I actually opened 2 tickets for this since I was hopeful the first GM was just mistaken, as I have had quest reward items restored to me in the past. I was able to chat directly with the second GM, and he confirmed my fears that they're no longer restoring quest items due to the sheer influx of tickets that transmogrification has produced. While they did do this before, now they have to deny them.
It's very sad news for people who have completed quests and can no longer get the items from them, especially if they were unique.

I had suspected this might be the case, after transmog was introduced, that this would happen...just imagining all the tickets that would be opened for items. Anyways, just wanted to forewarn people to hang onto unique quest items in case they aren't able to get them back at a later date.