I love this! I use the Terminal and VIM every day and really enjoy tools that fit within that workflow. I didn't even know about this project when I started building a similar tool (with the same name!).
I have a relative path set up for my jrnl: "this": "./notes.txt"
which I've aliased: note=jrnl this
if I'm doing something that I get pulled away from it's a quick "note was working on the flux capacitor in somefile" .gitignore the notes file as desired