In the Character dialog, Spell book tab most classes can examine all the spells available, bards and sorc can not.
I think it would be helpful if the bard / sorc spell book mimiced the other caster's books, in allowing all spells to be viewed.
As you get higher level I fiind you want to compare lower level spells to see if there are more useful ones. The only way to examine the other available spells is is to go to a trainer and use an interface that assumes you know which spell level you are trading.
I don't want to change spells, except at the trainer, but would like ot be able to view spells anywhere.