1. Captain = a PvP mode so same thing.
2. Same thing applies. Work with your friend who has a shield to get in range of the archer/javelin thrower?
I'd classify Captain as PvPvE, but you know perfectly well what I meant. Not here to debate semantics.
Anyway, no, it doesn't work. If you had some experience in competitive M&B you wouldn't come out with these assertions. There's a reason 2h are never used in competitive Warband.