I used it in Heroic Archi. We still havent downed him but i was using this as a Fury 2 hand with a heroic warforged ilvl 731 horn as other trink. I wasn comparing it with the Heroic Unending hunger with socket i have. Now im only ilvl 717 atm but i noticed that my dps during the attempts with the BoA trink was higher on average.
My dps with the H WF Horn lv 2 + H UH + socket was on average 57k.
My dps with the H WF Horn lv 2 +
http://www.wowdb.com/items/133595-gronntooth-war-horn averaged about between 64k-75k.
I was actually pretty shocked about it. I thought perhaps it had to do with RNG in general, but it seems to be consistently better. I would imagine that even the mythic UH wouldn't be as good as it.
But please take my findings with a grain of salt, im not a mythic level player. I definitely encourage giving it a shot however.