Hmmmmm, interaction between Momo and Brun? that could be interesting. Not sure if it'd work out all that well though.
Momo is a rather...uptight person, which could cause some problems with some of Brun's behaviors that are outside of the normal social protocols (getting in close to sniff BO, sliding along the carpet, etc). She's very diplomatic, but diplomacy tends to either sail over Brun's head (again, the sniffing, or her obliviousness to Clinton's attraction in the alternate coffee shop - or, apparently, any attraction more subtle than what she needs to chase away with a harpoon) or fall into what she's sensitized to understand as belittling (Clinton's reluctance to explain Elliot's reaction). And while Momo does try to be helpful and understanding, she loses patience when when people are obstinate about behavior she considers bothersome (Marigold's pity parties and later, constant bangin'; potentially, Brun's mulishness about getting up and going out, or doing things without consideration to others).
Though even if they would get on each others' nerves it would be interesting to see.