This, though the trash gloves are a really good piece if you don't have the tier gloves. Obviously what drops you get will influence how you gear.
I am using the trash gloves right now and they are pretty awesome tbh. Crit/Mastery with 2 yellow sockets (3 as a BS) makes up a lot of the Crit I have lost as I changed out gear from ToT. It can also be upgraded to heroic using a random drop item called Echoes of War, from any heroic boss. Can't be warforged, but will hold me over until I get tier gloves and the opportunity to trade out my tier shoulder for something better.
Ye RNG is a key factor. Also what bosses you kill first. You're far more likely to kill Nazgrim heroic than you are to kill Klaxi heroic, for example.