Well the entire Kamel geo might not be 'proven', but 362 chainstays are used (I think) on the Kamel, Pr, Ti, Adamant, Gu, Czar, Hydroxx, MBK and Echo Lite's to name a few so having such short chainstay's just seems to be a bit random. I've ridden Andy Green's B-4 and it feels like you're going to loop out whenever you try and kick... I'm sure you'd get used to it but I don't think you'd ever be able to put as much power through the frame for gaps and the like compared to a frame with longer stays.