I've been using boot for about 6 months now and it's wonderful ... for doing build tasks (take my source and create some artifacts). Especially with the improvements just released in boot 2.5.
You will want to understand how pods and filesets work if you are doing anything interesting, as some interactions with them can be confusing if you don't have the right mental model. The wiki is quite good, but the source is a bit messy.
For code reloading type tasks things are bit less nice, mostly because of the immutable nature of pods and filesets that make build tasks so trouble free. That means incremental cljs compilation, cljs repls and auto-test type tasks (for clj and cljs). We have transitioned to just using functions run from the repl to manage our clojurescript tasks and it has been a big improvement.
You will want to understand how pods and filesets work if you are doing anything interesting, as some interactions with them can be confusing if you don't have the right mental model. The wiki is quite good, but the source is a bit messy.
For code reloading type tasks things are bit less nice, mostly because of the immutable nature of pods and filesets that make build tasks so trouble free. That means incremental cljs compilation, cljs repls and auto-test type tasks (for clj and cljs). We have transitioned to just using functions run from the repl to manage our clojurescript tasks and it has been a big improvement.