Speaking as someone who was using Clojure pre-1.0 through... 1.2? because I was so interested in Lisps and one with access to a modern library ecosystem excited me, I did not enjoy my time with Maven at all. It felt very janky. A second issue that I hear they finally fixed was Clojure still gave all of the low level parts of the error that were basically the guts of Clojure and had nothing to do with my code which I got tired of dealing with. Probably other issues I'm forgetting as I have not used it in a decade or so, but I just did not enjoy my time dealing with the JVM ecosystem.