You probably don't want to hear about naps here.
Let's just say we're a few days away from 15 months of every single nap at least starting in the Ergo/Boba/etc. I think maybe 10 times in his life I have been able to get him out and transfer him to the bed without him waking up. I'm slowly going crazy. But yes, a nap in a carrier always works for us. He will not fall asleep any other way, though I hear that most babies are not like this.