Hi all. My company has started using dev-local since the first release and it has been excellent. I cannot thank the Datomic team enough for working on this 
In hopes that it might help others, I have written a short blog post on how we’ve been using dev-local (new library: dev-local-tu). It also answers @onetom’s question of how to get dev-local into a S3 Maven repo (another new lib: s3-mvn-upload).
Curious to hear feedback on this approach or approaches others have taken.