Aaron knew as soon as he was wrapped that it was time to sleep, i didn't have any problems with him and he was wrapped up until he was about 8 months.
Corey will be 9 weeks tomorrow and he is the same as Aaron, he knows once he is wrapped it's time to sleep. Corey is happy to sleep unwrapped too, whereas Aaron didn't settle very well unless he was wrapped. So i'd say each baby is different, some like to be wrapped and some don't.