There's probably old threads on this, but I couldn't find any recent ones on the subject.
Rites of Battle had a blurb about adding Dark Heresy and Rogue Trader characters into your Deathwatch Campaign and vice versa. I'm not sure how wise an idea it is to add a Space Marine into the other two, but when you think about DH and RT in Deathwatch, I find that most people go immediately go "omg, I can have inquisitors and sisters of battle in Deathwatch!". But there seems atleast an issue to start.
In the tabletop game, Space Marines and Sisters of Battle differ in a lot of respects, but they have the same powered guns.
In a DW game, bolt guns do 2d10+5X and in DH they do 1d10+5X. I know that space marine bolters are supposted to be superb pieces of tech craft, but aren't sisters bolters supposed to have the same amount of care and precision.
Now, I know they're two different games and concepts. DH is about mystery and intrigue while DW is about the most explosive action paced game I've ever seen. If you're not a Space marine in DW, it goes without saying that you shouldn't be as good as your space marine counterparts at combat, but what about the simple matter of just keeping up? Is it enough that they can't take damage like a space marine or do awesome space marine things, which also include automatic Righteous fury against Xenos?
Thoughts?