Comment by acaloiar

I used it for a few months, and can say that no skill is up to the task of keeping Claudeuage in check. You'll get a lot more mileage out of an "output style" with the same instructions, because output styles regularly remind Claude how to speak.

Even output styles are not always up to the task (Claudeuage slips through), and they're mutually exclusive, so you can only have one active at a time.