I modified the ./config/campanion.json config file and set "trinkets_backpack_support": true
But still using the chest slot instead of the back slot.
Version Campanion v4.1.1+fabric for 1.19.2

Ah yes trinkets support was temporarily disabled - I can try and get it back tomorrow :)

It looks like it's still not working, did you ever get around to re-enabling it?

How can I manualy re-enable it??? I need my armor slot!
P.S. Oh... You already enabled it...
Okay I will build 4.1.3 manualy on my PC...

Done: #188
Please check and merge if possible.
Looks cursed but works. (Only for fabric...)

Well... Guess It will be harder than I thought... But well...

Codding done... Creating Pull request...

temp-release.zip
Temporal release... You can unpack it to mods folder if you don't want to wait for actual release. May be buggy. Use at your own risk.

as far as I tried this it does not seem to work, backpacks still dont go into the backpack slot