[ister]

I agree about the invoker. Another point about the diviner/invoker is that AFAIK the only level 9 spells are conjuration.

For a spellsword you want to have abjuration (protection normal missiles, mind blank etc.), alteration (Tenser's), necromancy or conjuration as a second rate alternative (armor spells), evocation (stoenskin, iron body) and illusion (mirror image). So the diviner would appear to be the way to go - all you miss is ghost armour and spirit armour is better.

My feeling is that the necromancer is the best bomber, but it depends what you mean by bomber. Enchantment is mostly disabling/killing spells vs damage dealers.