Aww...the heck with all that. Just put the Zen upstream of the 808. Done.
Actually, that order switcher looks pretty cool! Thanks for the layout Zach.
Also...as I've mentioned on other threads, I'm loving my Klon(e) into a Tube Screamer. Set the Klon(e) for low gain with some treble boost, and it makes the Tube Screamer shine. You might like to experiment with this using the Zen in place of the Klon(e).