Thanks for the kind offer Jen, but I had actually already purchased them.
They've arrived in the post this morning, so I did all the ties up and put them in the washing machine. I was quite impressed with how quickly they dried outside (was a very windy day here) and still were sooo very soft, without any help from tumble drier.
I tried one on Benjamin this afternoon (with a pad folded small kushies flanelette prefold inside). Wasn't so sure how to get the legs snug (bit gaping, the way I've found terry squares, since I don't know how to fold properly), so wasn't sure how it would cope w/ newborn runny poo!
But maybe I just need to keep practicing, as that was my first try - apart from once on a fat teddy bear first!!