Can I set it up to work with Libreworf or Firefox? I tried to do it for Librewolf, with the conventional Firefox approach
"E:\My Documents\A_FIREFOX BROWSER\FIREFOX\firefox.exe" -p --allow-downgrade
but as I'm sure you know, it resulted in wiping out my sessions and settings, or maybe it just pointed to something else??
The profile manager only understands local profiles. If you'd like to use secondary (or more) profiles, please see the Second Profile utility: https://portableapps.com/support/firefox_portable#second_profile
Sometimes, the impossible can become possible, if you're awesome!