Btw, here is a detailed, technical review. It is in German, but with transtae and all the code, it should be understandable.

TLDR: It’s good.

I’m not really sure, I haven’t used it. In fairness, I only use librewolf for incognito searches, not as a daily driver

i prefer to use librewolf as my everyday browser, while using mullvad as my browser for other things that dont require tor i like to keep things separated, personally