The thing about Edwin is he does not need those spells, since other party members will be able to cover those roles.
Loosing Mirror Image is a huge thing IMO... I use it all the time to protect my mages from all sorts of directed attacks... Also it works on area effects. Anything that can keep Aerie's low HP from dropping any sooner is great in my book... And stoneskin doesn't help you at all against enemy spells, but the 2 levels lower mirror image does.
Oh, you also left out Mislead. Not only a decent protection, its use as cheese is quite handy, if you want to use it in that way.
Project Image is a awesome spell used wisely... Why bother wasting spells when you can just ditch your body somewhere else and send the image into battle?
For mages (not sorcerers) I also enjoy Simalcrum is still an awesome spell, as it has your items in its quick slots, and even if its level is reduced, it can still provide an extra punch to your combat blasting.
So, I disagree... Conjurer has the advantage since you only loose 1 spell that you would actually use, True Sight, and clerics/druids also recieve that spell. Oh and by the way, there are 3 ID glasses available in the game. One in Gaelan Bayle's house, one via limited wish, and umm the other I forget.. but I know its there
