Long time Rogue Trader player here. Recently, my usual GM has been gifted the Dark Heresy core rule book for Christmas and wants to try running it for a change of pace. I'm looking to give the Faith system from BoM a try because it's something new. There's a couple of things that worry me:
The resource they run on: fate points. A char would usually have 2-3 fate points at character creation and they tend to go down from there. It's entirely possible to get 'stuck' with 1 or even 0 fate points. Spending 300 xp per talent and then being able to use one of them once per session or not at all (if out of fate points) seems a bad return on investment.
The power of the talents. Some of them seem really powerful, especially Emperor's Wrath ones. I can use 2 fate points to activate Wrath of the Faithful and Flames of Faith on a clip of Inferno Rounds and get 2d10 damage(or 3d10 vs Daemons), Tearing (from the bolter) and Righteous Fury on a 9 or 10. 2d10+5, pen 4 is almost a guaranteed kill, even on power armor.
So I'm looking for some input: what have your experiences with the Faith system been?