I do not have any problem whatsoever with your posting the Viva here, but I am too much of a gearhead to appreciate anything single speed. I concur 100% with your desire to add an internally geared hub, but I have yet to find one whose ratios are close enough together for my 6-7 percent tastes. I really do like the traditional frame shape, particularly the horizontal top tube and the curved fork, both of which just look "right" to me.