For those who said this design isn't as strong, how do you explain wishbone seatstays? They work as well as traditional split stays. And there are plenty of bikes with seat stays ending part way up the seat tube (look at the Bridgestone carbon track frame, for example). One could even argue that the lower drive-side seatstay allows it to give more strength to the drive line. My bigger question would be whether over time the asymmetry would cause stress-related failures from simple vertical load fatigue (not pedaling, just the bouncing from riding on the road). That, plus the fact that the asymmetrical loading is going into a thin part of what may be a butted seat tube.
People have tried weird frame designs for years and none are new at this point. This design showed up in some british track frames in the 50's but never became popular. Nothing wrong with experimenting, however, and it certainly is worth some comments. I'd have painted the two stays in different colors just to show off the difference. Makes for better conversation on a group ride or when you meet someone on the street.
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