How is the experience with transducers? I did not try it but I fear that you'd first see the transducer being constructed into a heap of anonymous functions and clojure implementation details, and then afterwards you can step into how that gets executed in each element of the stream. I have had unpleasant experiences with clojure debugging... so I feel what your parent post is saying.
Perhaps it's just a different way of doing the same thing, but I never feel the need to reach for a debugger in the presence of the REPL and tools like Timbre. Just wrap what you want to see in (timbre/spy ...) and you're good to go.
"Debugging clj / cljs is hardpartly due to transducers" -> "I can step though my code with cursive" -> "how does cursive handle transducers?" -> "you don't need a debugger"