In any operation, the most uncomfortable element of the right seat has always been the non-standard captain. It doesn't need to be much, but there's SOP and there's technique, and there's often an element of what this captain might want to see vs. that one. Some places, more noticeable than others. Not knowing what to expect is the burden of F/O's everywehre, despite a standardized operation.

Eccentricities amplify that.