There's a big difference between passive mana reg when you wear Bone Armor set, Studded armor set or Leather armor set? I'm working on a Provo Archer for AMIBS (it has 100 Magery) and not sure about what armor set is better.
Well, is an archer-dexxer (in fact doesnt have meditation) but it useful to have always mana pool full for some emergency spell. Thinking about it, with Provo and archery I shouldn't be hitted often.
I do invulnerability bone with 70 mage/30 med on my Provo dexer. I also have tried 0 magery, and 100. The 70/30 with bone has been my favorite combination.