Except when it doesn't work. I tried using it a few months ago on both Windows and WSL, but I had to give up and resort to run a Maxima kernel on EIN.¹

I was going to try again before commenting, but I broke my WSL setup last week and didn't have time to fix it yet, but I sure will try it again next month.

¹ http://millejoh.github.io/emacs-ipython-notebook/