I was in a local music store that I don't go to very often yesterday looking for strings. They didn't have what I was looking for, and I was on my way out when the manager told me they had a new product and pulled some "Knucklehead" strings out from under the counter. He offered them to me for $20 to be a guinea pig (which I found out this morning is about $2 cheaper than the lowest internet price I have been able to find). Anyway, I was curious whether anyone else has tried these. I'll post a review as soon as I get them installed and have a chance to play them a little. The website is here.