What makes a Respected and Respectful Inquisitor?

My Black Legion Warband HATES Inquisitors even more than other Chaos Warbands and will go out of there way Dark Angels style(for the Fallen) and hunt them down to kill them brutally.

In my young Warlord’s perspective; they are the embodiment of everything wrong with the Imperium, they are cold, callus, and inhuman despite being human(how ironic). They destroy worlds without a second thought(ironic) and weird great power demanding others to fight on their behalf(ironic cause don’t remind my Warlord he commonly annexes smaller Chaos Warbands). They are bossy, feeling untouchable and immortal. He Hates them. Mainly because early on in his career; several hive worlds they took over were Exterminatus which broke his Hearts to have so many killed. Especially seeing his battle brothers’ homeworlds destroyed.

But what if, he meets the rare cool “Good” Inquisitor? So surprised by their respectful nature that he cannot help but let them live? His burning Hatred’s Mark(ha! Tabletop reference) cooling when hearing their words. For example: an Einsenhorn, an Arberley Vail, a Jarlsdottyr (from what I heard).

My Warlord’s hypno-indoctrination was shoddy and thus the typical hatred a Black Legionary would bear to humans and the Imperium wasn’t very present at first. All his hatred was developed and learned through direct experience. Souring him into who he he is “now”. The Galaxy so dark it can make a bright eyed neophyte into a bitter viscous beast. But because he is still more fluid than his elder brother and younger brothers he will pay respects were respects are owed. He’ll be suplexing his own men one minute and thanking a snitch for sharing information the next. For instance, he would be impressed yet deeply suspicious of the T’au but he hasn’t met them but if he did? Sly smile, suspicious snarl.

This is really odd cause it’s asking the tusked monster(he wears Terminator Armour) to not kill the thing he hates most and the thing he hates loathes him just as much to be cool enough to both parties to separate rather than result in death.