I like the idea of incorporating those types of spells into the dialogues. It would certainly be more convenient than having to remember to cast them first. I feel like that makes me sound lazy, but I get so caught up in the fact that there are people/animals to talk to that sometimes I forget to cast my spells first.

Oh, and I have yet to use the detct thoughts scroll. I don't during roleplaying because it seems like a really creepy thing to do from a character's perspective, but I should some time just to see what happens.