Nothing against GP, I ascribe to some of his philosophy, I don't ride clipped in or with toe straps and never will. I've met the people at VO a couple of times now and they are bike freaks, my kind of folks. I would be much more likely to buy a VO frame and build out a complete bike for the cost of a Rivendell frame alone.
From what I can tell of the Rivendell frame geometry chart, this is a 26" version of a Bombadil.
P4170270 by
galoot_loves_tools, on Flickr