i, for one, am waiting with baited breath for one or two or three. i was just thinking the other night while i was out, that if i had an LJ shirt on, my fellow LJ'ers that may happen to see me out would recognize the all too familiar pencil-swirl, see how cool it looks and want one as well.
i know that the profit margin isnt great for them, but it is PROFIT. and that means more LJ for everyone, paidmembers and free accounts.
sidenote- the shirts are like minibillboards and can be a huge source of advertising.