I recently presented at the Philly ETE conference, and it was a really great experience. The conference was well organized, there were lots of great talks, and I got to meet a bunch of interesting people.
My talk focused on the workflow using Luminus and Reagent. During the talk I built a simple app from scratch. The app illustrates how to work with a relational database, create a documented service API, and build a UI for it using Reagent. The live demo portion stats around the 11 minute mark.
If you're interested in my workflow using Luminus and Cursive, then I definitely recommend watching the talk.