Was finally brave enough to try MCN overnight after converting to them fulltime during the day a couple of months ago. Used a PUL cover and a BBB with both booster and it worked brilliantly! But OMG, the smell was gross! Even her pj's and sheet stunk dispite the fact that they were bone dry!
Anyway, I've just ordered a fleece cover to try which won't be here until at least next week if that, so in the mean time I'm wondering if night nappies smell less with fleece or wool covers compared to PUL. I know PUL is suppose to breathable, but I'm sure it wouldn't be as breathable as fleece or wool.