Despite what he might be telling his friends/family on the phone when they ask how he's getting on, because in the 2 weeks that our newborn DC2 has been at home he has got up with them in the night precisely 0 times, and only got up to DC1 last night after I'd spent an hour dealing with toddler shenanigans and begged him to intervene.
I can hear him now complaining to his DSis about how tired he is and I really want to go in and throw things at him.