Might be that way in flight sim flaps 5 but not in reality.
PF does walk around in BA (pilot flying...as in if the captain is flying, he also does walkaround). And the comment about captain wanting first sector is comedy.
Sounds like an interesting way of doing it.
At my outfit (short turns..) the PNF does the walk around while the PF sets up the cockpit.
From a 'monitored' POV, the other way around would probably make more sense!