A few quick Vampire questions - not sure what's happened in recent patches and the various eso wiki's and sites seem to say different things...
1) Do you need a vamp skill on your bar to benefit from Supernatural Recovery (+10% Magika and Stamina Recovery)?
2) Do you need a vamp skill on your bar to benefit from Undeath (Reduces damage dealt to you when you fall below x% health)
3) As a PVE Magika Sorc is it worth being a Vampire?