You can check the thread for Pipes, there are some reports there, from a little while back.
This seems to me a good example of some of what can go wrong with a crowdfunded electronic hardware development, massively delayed schedule, poor feedback, and a final product below expectations, though not a total train wreck either.
Interesting to weigh this with the successes, and the products that never would have existed, when considering a decision to back any project.