It seems an awful lot like the VAWT from Magwind. Personally, I think Magwinds claims are hyperbolic and unsubstantiated, but then again, they're chargin 10k for a small unit. To the best of my knowledge, they have yet to deliver on the systems which were purchased months ago, and have a tendency to avoid and delay any time the "When can I have mine" question is asked.
I like your alternative better.