I think I'll be waiting for the combo pack / Steam sale. Good to release them close together though, something that bugs me about DLC is usually there's not enough there to warrant getting into the game again. But I don't feel like spending another $30.
I enjoyed NV, and numerous elements were significantly improved over FO3, but nonetheless I enjoyed FO3 more. Quite a lot of NV felt like a grind (TBF I've probably forgotten a lot of the FO3 grind) while FO3 felt like more care had been taken in entertaining the gamer.