on the lish shell

Has anyone ever tried lish?  It's a shell based in Common Lisp.  It
looks nice, but also a bit unstable and likely with various corner
cases.  Nevertheless, it does seem interesting for someone learning the
language because it will work as exercises in remembering procedure
names and syntax.  By using it a lot, it should help to improve my Lisp.
Please share any experience with it if you have it.

Homepage:
https://github.com/nibbula/yew/tree/master/lish