I have a little question about Vampirism/necromage though. I don't play a vampire (yet), so I cannot check this out.
Does Necromage/Vampirism apply on the enchantment at the time of the enchantment, making the enchantment permanent at 36%, or does he apply only when you are a Vampire?
I asked this question because if it applies at the time of the enchantment, then what you can do is become a Vampire just before starting to enchant your gear. Then after that, get the cure.
If not, then you will have to stay Vampire all the time to get the benefits...