Surely it has to be landing pilot with 'eyes out' - That is the whole point - To avoid one pilot going from an instrument environment to a visual one, and trying to interpret all that information in just a few seconds whilst trying to land. I accept your point though - I do (incorrectly) often look out through the windscreen as part of my scan and I guess that is the control freak in most of us.
I don't want us to get into the whole co-pilot / Captain issue. I suppose it is fair to say that an inexperienced co-pilot is generally more likely to be unfamiliar with what they see and potentially make mistakes, but it is important to recognise that any of us can misinterpret visual cues and make a mistake. Captains fly into the water too.