I was walking back from Solitude to whiterun today and I decided instead to swing past Heartwood Mill and through Riverwood.
That way id pass by the shores of the lake and those three or four spawn points where a random "Roll Of The Dice" encounter would surprise me.
As I was roughly northish of Falkreath theres a small dock by the lake where usually hunters appear or if youve been bad...Dark Brotherhood assassins.
This time though, because ive installed Dawnguard Vampires have been added to the random appear lists and sure enough there was a Vampire in the now common vampire armor and boots...MINING IRON at the deposit off to the left of the dock.
I walked up and activated him but he barely looked up from his picking asking "Do you need something".
I of course roasted him with fire for his glitchyness and his thrall appeared out of nowhere to defend him.
Usually they appear in threes or more often knowing youre there and coming up as red dots on the compass before theyve even entered draw distance.