No, please use tools.build -- I already use it in most of my OSS projects to build library JARs for deployment to Clojars (instead of depstar).
I've been working with Alex to close the gap between uber in tools.build and uberjar in depstar and have already switched over to tools.build at work for our production artifacts (again, switching away from depstar).
Once tools.build's uber has parity with depstar's uberjar, I intend to sunset the depstar project to avoid continued fragmentation of tooling and I strongly encourage everyone to look to tools.build for JAR building at this point.