Nope no nappy-evacuation problems here yet Its a struggle just to get him still enough to change him nowdays. However it wouldnt be a huge issue because Jett poo's half an hour after he wakes up in the morning like clockwork so I dont have panic attacks imagining poo-smeared walls (although atleast it would match his quilt cover lol) I think it depends on the kid. If J hasnt done it by now he isnt going to I would think, MCNs and sposies all take the same amount of effort to undo.