I love ccw as a coding tool and the full editor repl is great too but I haven't been able to get breakpoints to work on it ever. Another thing that irks me about it lately is no real clojurescript support! That said it is still my primary clojure tool and things like figwheel help close the gap.
My debugging experience with Counterclockwise wasn't very positive. But admittedly the last time I tried was a very long time ago and things may have changed significantly.