Good news I'v played this mod with Cats bounty hunter with its other 3 paths and they do work together (I had Cats' above this one so i don't know if changing positions will change that and whoever is the top one of the load order will have their Wanderer path as the main Wanderer as well as trinket changes).
One problem I did have was while in the mastery menu Cats' path skills had locks, like the ones in kingdom, over some of them but upgrading them still worked normally but you can upgrade them multiple times (DON'T DO THAT THO).

His face your failure specter should be a credit card chargeback notice

what happens when i takee him to the final boss for "face your failure"?

Awesome!