I have set it up so the clan tag works in CS:GO and TF2.

In CS:GO you go to game options and choose the >>TGOGH<< tag.
I don't know how to do it in TF2 but I'm sure Mr. Hong will offer some info on that.

Sorry about the sad logo. I just made it on the fly because our FB logo obviously wont fit and there doesn't seem to be a way to change the banner thing right now.