I was wondering this, as I'm thinking of trying them for my very-active-and-impossible-to-hold-still 14 month old.
I used pull-ups for DS1 at night in the final stages of potty training, and I've always assumed they were less absorbant than normal nappies, and therefore only really designed for use when potty training.
Is this the case? Obviously potty training is a long way off for DS2, but I think pull-ups would be easier to get on him!
Thanks