Where is your set bonus?

So I have been playing my druid in our 25 man groups and there is another druid who has been doing the tanking. Now I find this interesting because said bear has not purchased the T10 pieces and has used his emblems for other vendor pieces. Here is what bothers me about this, I asked him why he hasn't gotten the set pieces and he said he had not had enough emblems but looking at his cloak, belt, idol, trinkets, and offset I know he has had enough to get the 4 piece set. Nor does he even have the Sack of Wonder.

Now, I am not going to tell anyone that they have to have X piece, but damn, it would be nice if he had that extra cooldown. He dies A LOT. I don't know if he just sucks, or manages his cooldowns badly or what. And having spoken with the raid leader, I know why I'm not tanking. My DPS is twice his dps. So we are stuck with him as a tank and me as a kitty. And I have the 4 piece T10 Sanctified set and Heroic Sack of Wonder. I would love to be able to re-gem my T10 for kitty because some of the pieces are delicious for kitty, but I tank on the 10 mans we do and we are doing heroic modes and I want my set bonus.

So I guess I will just continue to collect badges until I have enough to have all the extra pieces I want for kitty. Sigh, but I really just want to be bear!