This nicely summarizes some of my frustrations with using Clojure for my master's thesis. I'm not unhappy with the choice. Clojure allows such a juicy crossover between "everything is a key-value map, mannn" and "If it has :quack key set to true, treat it like a duck" which works really well for entity-component-system game-design-y things.
but the development story in Common Lisp ... and my gawd, the CONDITION SYSTEM ... were things that I sorely missed for the last year. and I'm not even that experienced of a CL hacker. It just grew on me so quickly. If only CLOS and the primitive data types in CL played together more nicely than they seem to.