As cool looking as these are, and as much as I want to get into ASIC, it looks like these will probably never earn you your 2BTC.  At current difficulty, it would take something like 240 days to recover your investment, but we all know difficulty is shooting through the roof.  Considering the basic chip is around $10 in bulk, the whole shebang should be going for around $50.  I know you didn't set the price Canary, but that's my .02 BTC.