Smannesman: Not really important, but I'm curious.
Do the expansions add anything to the 'base' game like new weapons or armor sets and such or are they both completely separate complimentary stories?
Hos:
Several new armor and weapons for Geralt, new gear for Roach.
New witcher gear: Viper. Getting all parts depends on your chosen end.
Biggest change is the addition of rune words.
New moon armor set.
BaW:
Several new armor and weapons for Geralt, new gear for Roach. Personalized Geralt of Rivia items.
New witcher gear: Manticore. New level of witcher gear.
2 vampire armor sets.