This is super cool, have you thought about turning it into core.probabilistic? It's definitely a great paradigm clojure is missing.
I'd love to see a talk on it :D
What's with the name?
It is probably a joke as Anglicanism (Church of England, Episcopalian for Americans) is Via_media (i.e. the middle way between Catholicism and Protestant theologies), this is the middle path between Church and Venture.
That's so obscure, I love it! Kind of fits with the programming paradigm (ducks).