I consider arcana more useful than the id spell because it's always available, and no need to rest because you "ran out" of id as you would with the spell.
The problem with the armored arcana feat is that you aren't gonna make much more than level 16 in normal play (any non-HOF mode). Ergo, for non-fighters, choosing feats carefully is vital. Much better to take the risk and go for the spell feats. Besides, there are items in the game that a mage can wear, like bracers of defense, rings of protection, and such. They will give as good or better defense as light armor anyway.
Yes, bare hands are melee weapons, but unfortunately, weapon finesse (dex instead of st bonus to-hit) doesn't work with barehand attacks. Don't know why.
One other thing: if you have only 1 skill point, you can roll it over to your next level gain; you aren't forced to use it right then.
Nightowl2
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