@erichmond: I would reccomend taking a look at p-frame, a prototype I'm making to get re-frame and devcards working.
it uses pure-frame to setup multiple frames (seperate stores for handlers/app-db/subscriptions).
I've gotten about halfway there - being able to setup multiple frames
if you only need one defcard per page, or don't mind about the common state, it works nicely
thanks!