I did something similar for emacs here:

https://twitter.com/hagmonk/status/1338965551775764481

and got similar looking improvements. I also benchmarked Leiningen startup times:

https://gist.github.com/hagmonk/ee5eaa8c07e245422ec384737cb4...

Basically, it's not uncommon to find things running 1.5x faster on M1. Even outside of benchmarks, everything is perceptibly - dare I say it - snappier.