IWASO DH is the same, as you know. He looked after G on Saturday for about 7 hours. G was teething badly, I left him with 3oz of milk and an A4 sheet of "instructions" and off I went. I was a bit worried, as G was so unhappy and thought DH would be grumpy with G the whole day.
I came home and DH had only changed his nappy once and he was still wearing his PJs (but as FN41 pointed out, it was the weekend!). He put him down for naps so at least he slept a bit. DH had given him something to eat (probably not as much as normal, but hey ho) but he was hungry and had a big feed. Apart from that, everything was fine. I was pleasantly surprised.
DH said, I don't know what all the fuss is about - this is easy! SO, I told him he can do it again and again and again....
Oh, and HQ strangely no side effects from not feeding. I didn't feel fuller than usual, in fact. I did get my first period on Monday, though, so perhaps that triggered it. I think it's definitely a sign that milk production is waning. Or, that feeds are getting spaced out a bit more maybe.