The Swing Bike made it into the shop (Midwest Cyclery) yesterday. Here is Zeke negotiating the bike shop with it. The report is everybody has had fun on it. So I suspect it will be there to stay.
Chainstays Galore! . . . times Four (x4). Roughing in the fit is one thing, precision miters is another. These took a little longer than I thought they would. The complexity grows exponentially. The good news is they are mitered, sanded, cleaned, and ready for brazing.