I'm ashamed to say for the time being I'm using PUL
I was using wool longies while we were away a couple of weeks ago, but the weather's turned so warm that I can't bring myself to put longies on him. Connor's always slept in a grobag, and I'm not sure how well he'd sleep out of it. Otherwise I'd just have him in his cot in PJ top and longies, with no covers. I really need to get round to buying some shorties or a soaker. I actually use my minki more often than my other night nappies, but I suppose it still has a sweaty PUL layer, so probably no different to nappy + PUL wrap.