Nice. The first time I tried running a commit this took a while (and since I'm using magit I got no real feedback until the pre-commit processes were complete...maybe that's something I can tweak), but subsequent tests appeared to run quickly.

🤞 no more "lint 🔔" commits 😆

That's expected. First commit has to fetch down the dependencies (sometimes it's a docker container, sometimes it's a Python package), but it also caches them for next time. Pre-commit will also run its checks only on changed files at hook-time to minimize time consumed, so expect it to take a bit longer if you use --all-files as well, especially shellcheck.