OK, I've ordered the game, but I haven't paid for it yet. I don't get to play it much (if at all being in Australia) given the timing of patches, and most of the game play seems to be watching the queue to play countdown running.
But the music is good, and occasionally, I get to see a little of the game for a few minutes at a time. For free!
When I receive my game, I'll wear the t-shirt too.
Now, actually paying for a subscription, that's an entirely different matter. I'll wait and see on that one.