He nods at what Professor Eichel is saying, not seeming bothered by the possibility of irreversible damage. It's only logical. He'll be careful, and it's not as if he has plans to use the Imperius Curse on anyone else.

At the question, he frowns a little. "I don't know."

He enjoys it in a purely physical sense, he supposes. Mentally...he's not too sure. He can't entirely shake off the questioning voice that wonders if this is something Professor Nebilim would approve of.