[Gimli]

Hey - well I never use the Gadgeteer for buffing spells or things like x-ray or detect secrets, would rather cast them and raise the spell skills, especially with a 4-book bishop to develop. Plus once you can put a portal in Trynton near the everlasting mana fountain, mana is a non issue - not to mention all the mana potions you can hoard. Don't think it can be wasted IMHO as it helps raise skills.

As for raising Divinity for the bishop, is his divinity higher than his psionics skill now? If so the charm spell used on shop keeper type NPCs is a great way to train it pretty quickly. Same for identify item, works very well in tandem with potion mixing sessions. In combat you can also go for make wounds as a ranged attack, it's priest only.