FWIW, I ended up going with the Soho for a variety of reasons. The ETTL on this bike is 565mm by their measurement (see above), with a standover of 30.39". This is the 20" frame model.
I realized in all my searching and test riding that one bike really won't do it all, and the Soho is my commuter. If I decide to get a road bike (or whatever) then I'll focus on the needs for that particular riding style. There I might want a real stretched out reach, for a better position. We'll see.
-- Sam