Metropolis seems like a cool idea. You could build a pretty weatherproof bike with all the internal gear stuff. Looking at the price of the stuff I might just go with n+1 (used). My brother lent me one of his spare bikes with gears that I'm trying out at the moment. I'll see how that goes for me. It is a Time carbon dealio that I will never be able to afford. Pretty funny riding Fly Ruben PC pedals on this setup.