Ok, real performance question. Wouldn't this hubless wheel offer a performance penalty because of the added friction that the larger bearing-seal would have?
In a 17" hub wheel, the bearings are in the center and there might be something like a 6 inches circumference of material keeping water out and grease in around the bearings. If I understand this right, that same 17" wheel here would have around 50" of friction inducing bearing seal, and it would have to be heavier duty to deal with the higher relative contact speed with the wheel.