Christ on a crutch...we really care about which seat is used....by whom....when...for what?
Try this one...helicopter type certificated for pilot in right seat when solo. But..equipped with duals...mod to include a bubble door on the left and engine gauges in the door...start button etc on the left hand seat side as well as the right side. You are flying a longline...sitting in the left seat and you are solo.
According to some of yez....one could not log any time at all because you are in the wrong seat.