you can try it in the web version, download the manifest file form his website. Than go in the webversion to add in -> my add ins -> upload and upload the manifest file. Only downside is that it will disappear after a week or so.

I might do once I get local to a good spot. Should in theory be fine on web... but haven't tested/tried

Works surprisingly well, even the connection to local host to use my codex sub, would have not thoughts thats possible ;) Really cool work!

why not use a vm/wine for a native experience (though, tbf, native excel is kind of hot garbage these days compared to older versions...)