I've been writing about my first impressions of the language here:
https://ianthehenry.com/posts/janet-game/
Not a whole lot of content yet, but I plan to keep going with it.
I am pretty firmly in the Haskell/OCaml "let me program with types" camp for most development, but it's a great to have a little scripting language to reach for instead of bash or Python or Perl. Using Janet (coming from Python) reminds me a bit of:
Except... without the rich standard library :)