A friend and I both work for a home brew shop and we got a Tower of Power in and were told to test it out. Can't post pics yet because we're not sure what Blichmann wants with that, but I can tell you it's pretty sweet. Installed into the burner in all of about 15 minutes. The sparker is very effective at lighting the burner and the propane valve worked like a charm. Seemed like a bit of a delay to kill the burner as I warmed the probe in my hand, but it WAS a wild temperature swing and it did kill the burner within 10 seconds after hitting the target. Other than that, it hit temps perfectly and was able to relight the burner as needed.
Overall, it is a very good temperature automation system that's very easy to integrate into pretty much any system. I don't believe they've set retail pricing yet, but it will be expensive. Much more than the Arduino system I'm working on.
I'll post pics as soon as I can.