That extension is actually pretty cool. There is also tridactyl and a browser that was made with vim in mind, but a browser and a text editor are too different for many things to translate.

Ya know, I might throw that on to my browser but I doubt I’d actually use it much. I only really use my browser for research; notes, music, and most of my work is done in the terminal. Being able to swap tabs faster by not having to cycle could be useful, but other than that I find the mouse to be a pretty rapid way of navigating unfamiliar pages