I hear a lot of people...well...maybe not a lot, but a good number of people asking questions about how to roll Xenos PC's, or the like.
On the one hand, it expands the DH system to encorporate elements of the universe that we all love, but aren't built into the game. Heck, there is a whole player written sourcebook on playing Space Marines. I can understand this, to some degree.
On the other hand, you're talking about working within an organisation that has a full third of its members devoted to rooting out and killing Alien influences. Personally I take a very hard-line stance against mutants, heretics, and aliens. My characters would have no compunction about killing any of the three enemies of humanity at the drop of a hat.
On the other hand, some Inquisitors are much more radical than others, and some aliens would be able to blend in with humans more readily. If played properly I think it could be done, but the idea of an Orc walking the streets of hive sibellus on a mission from the Inquisition is ridiculous.
Your thoughts?