In True Blood S01E10, Jorge the Magister chooses the punishment for Bill Compton. As Bill begins (47:50), he is told
I'd hate to interrupt, but glamour is not permitted.
At the time, I thought it was just to make it more cruel as part of his punishment.
Now I can think of two other events that seem to follow this rule.
- Eddie probably was not glamoured since he wanted to be like the one who was not attractive, and yet still very popular. (s01e09)
- Bill was not glamoured during his time as depicted in his civil war period encounter. (s01e05)
I can't remember this rule from old novels (Lestat), either. Was the stipulation specifically for Bill's punishment? If it's the rule for any act of turning, has there been a more detailed explanation?