It doesn't really matter who does what as long as SOP tasks are completed and checked (and crew thumb-twiddling allocated as per). Out of interest, in DanAir as an F/O I often flew the outbound sectors, and the same in BA at LGW. When I did my command training in BA I gingerly asked TCs why it was that Captains seemed to do the outbound sectors and was told "There is nothing written down, old boy, its just the way we do it ......." As a Captain in BA and Astraeus I ignored the "unwritten rule" and only with two F/Os regretted it.
Probably time to draw our own conclusions, boys and girls and drag this back on topic?