Hello, a few days ago I got the book Disciples of the Dark Gods mainly because I'm interested in the rules for untouchables. Yesterday I saw that there seem to be newer rules in the Radical's Handbook. So I have two questions.
1) What's the difference between the Untouchable rules? A review at Amazon states that the one from the Radical's Handbook is "a slightly changed and more useable 'untouchable' trait". What does it mean? Less powerful? Weaker drawbacks?
2) Can traits from Dark Heresy be used by characters of other systems like Rogue Trader or Deathwatch? Could I for example create an untouchable arch-militant who spends 400 of his 500 free xp at character creation for the Untouchable trait from Disciples of the Dark Gods? With GM approval of course.