Now for all of those that are wondering, and can't get the DLC yet (for various reasons).

Grahams pistol... is it good enough to be used by New Vegas's biggest badass. By that I mean is it an early, mid or late game weapon, and is it useful enough for the 'priest/paladin' character I've been planning for a while. I mean, what could be more awesome then smiting zombies and heathens then with holy pistol (light) and Flaming sword (shishe)