One final suggestion, since you know this fight may be coming:
Steal the cloak. Or hire someone to do it for you.
Thatll piss everyone off. Its a party member.
I feel hes overly abusing the cloak for things it shouldnt be used for. He tried to attack a dragon egg I was carryinf because it was a black dragon egg and claimed i didnt get a reaction to move it out of the way because the direction I thoufht he was coming from wasnt really the direction he was coming from. Hes being super literal about the cloak. So im trying to be super literal as well.
This is just for insurance purposes. Mainly because I just got a find familiar scroll and summoned a fey owl and he made a clear point that his daggers do +1 against fey so if the daggers even touch the owl itll die. There would be no reason for him to want to do this but his character is true neutral so you never know. If he kills the owl im never getting it back because it was a scroll. So if that happens, im kicking his ass.
The only issue is that hes also a monk but he has a lvl in rogue and he took the shadow path in monk. So Darkness is a thing.