In the Braccus Rex Armory in the Hallow Marshes, our party was confronted with some magisters who had a Persuasion dialog. We won and they left, but we got no EXP from them.

Normally, Persuasion dialogs when won offered EXP and sometimes made units leave. Since we wanted to maximize our EXP gain, we later formulated a plan to kill them since we felt cheated.