[tgallant]

somewhat tangential to your point of implementing a so-called SOP, I think the discussion of state, as it relates to OOP or otherwise, can result in very philosophical conversations. see here: http://clojure.org/state

As an ex philosophy major, immutable state and its implications on identity interest me greatly. I feel like this, and other ideas from FP, could be considered a step toward a so-called Subject-Object Programming paradigm.