Kam there are some AI2 OSFA nappies around. Most of mine are (sorry I cant say too much but the info is in the MPM section)

My DH was all for simple when we started. He now knows how to put the nappies together, and will even hunt out the matching boosters and he puts them in the machine when the bucket is full. For me when it was a case of being simple, I just had to have it all ready for him to just grab one and put it on. Didn't matter how much I had to do to get it ready, as long as it was ready when he needed it. I still do that now because it makes it easier for me, and it makes it easy when we have a babysitter, but I know that DH can do it if he needs to.