As a general rule, the KPR leaders personally choose not take the officer, unless we have roughly 12 or more people as we do not believe the bonus is worth the loss of a musket (or as the usual case may be, a rifle). When we do take an officer, he is not always the person leading. He could just be a ranker in the line (maybe he likes sword combat or something), but your job is to provide the line with your shooting buff. He will not be the first into melee, nor will he often be lined up with the line very long. His or her position, is behind the line, out of the line of fire.
Because yes, people DO like to officer aim, even if there is a 'no officer aim' rule in place.