The rename to mise broke my workflow for a bit and the library is changing fast & adding new features frequently. That's good, but I hope it can stabilize a bit, so things don't get deprecated again. Still love it.
I am currently using it with direnv, but there's enough functionality in mise to replace that too. I keep meaning to spend some time making mise work without direnv, but it's not been urgent since everything pretty much just works now.
I like the active development since the dev really seems to care about doing a great job, and I've been lucky enough so far that my (simple) workflows haven't been impacted.
https://github.com/jdx/mise/discussions/1525 for an example of how I use direnv with mise.