I know people say pickpocketing is a wasted skill to drop points into, but if it is high enough you can drop tenebrium weaps into the pockets of cultists you plan on killing en masse, just to drop their HP to 1 from the Rot. Great pre-battle softener. Just go adventuring for a while and return later.
Nanny
Nice. Reminds me of reverse pickpocketing explosives in Fallout.
I think hate for Pickpocket / Lockpick is a bit overstated, especially since you can easily have Wolgraff cover that for you without sacrificing much.