Arthur
Would allow himself to be trepanned, craves a new opening.

Would hesitate to trepan another, but at times fantasizes about performing the act himself - fixates on the positioning of his hands and holding someone's head in his lap.

Views trepanation as a deeply intimate gesture, would not trepan a stranger.

Louis
Would not allow himself to be trepanned, appreciative of being closed.

Would trepan another as delicately and precisely as possible, largely due to his own self-imposed professionalism.

No sacredness about the procedure - would stumble upon some niche self trepanation forum and attempt to convince strangers to pay him for a surgical operation he would perform on them in their bathtub.