I couldn't wait: Just ordered various sizes from that auction web site. Curiously, my local shop only has Schmetz, and they showed me the equivalent yesterday (which actually had "HLx5" printed on the box). The Schmetz were the exact same size as 15x1, hence my ordering them from.... New York city! So, Great White, you'll probably have already tested yours by the time mine get here (or I hope so) and given us 206/306/319/320 owners the good news.