OK, mine arrived today...and I decided not to use it. First, the mounting mechanism requires me to take out my motherboard again ( I'm using a MAZE2 now with steel bolts through the holes. The really bad part is that it's puny. There is no way in hell that this is going to out-perform a MAZE2. The channel is tiny, and it doesn't look like there is good thermal conduction between the copper bottom and the Al top. It does have 1/2" fittings, but the inlet and outlet are larger than the maze channels in the block.
In a way, it's very unfair to harsh on a block that I haven't tested, but it just seems so obvious from looking at it that I'll get better results with a Dtek or Danger Den block. Relegated to my block drawer. More dinero down the drain in my qwest for better temps
I can't wait for a scientific test of all these water blocks.