It hasn't been mentioned yet. I don't put in side plots of minor characters until they start to ooze out into the IC or are needed, but despite appearances yes Darius has a few connections and little rats within Loom causing him grief. Which why he was easily made moody in this scene. Only so much a gentle man can tolerate before his patience weakens. Though to be honest Darius is normally a well manner and business man rather then a brute. Though he has little whims as shown in dealing with threats himself. The main reason he doesn't is because the aftermath tends to be much worse then needed. Not a fan of causing more damage then needed really. 200 years of continuous essence absorption, even in little amounts, will make him a powerful hellion at least. 

As for Crow and Darius, depends on What I mentioned in the PM. Darius's species are known within hell for their iron bound loyalty with the right relationship type and with one advantage over other demons (that little secret we talked about) they are damn dangerous.