Ok, an update for you
I've used the nappy a few times now and have mixed reviews, I guess.
I love it's absorbency. We don't seem to have come close to challenging it (although DD is not a super pee-er anyway) but because the absorbent layer is tucked well into the pocket, it keeps her skin very very dry. Much better than the boos do.
The downside is that it seems a horrible fit! DD is a pretty skinny kid, but she's not THAT tiny. She's about 10kg and I have a large nappy. I cannot get a snug fit around her legs at all. In fact, the other night when she was BF lying across my lap sideways, I could see right in the leghole to her bottom
To be fair, it hasn't leaked yet, in about 5 uses, but I am not looking forward to her first poo in it!
If your bub has nice chunky thighs it would probably be great though.
Hope that's of some help?!