Yesterday Sherry and I put Eli in the carrier and walked downtown to do some errands. I had tried it out the day before doing a once around the block. The carrier works well and he really likes it; he fell asleep quickly both times. A healthy alternative to putting him in the car (which has a similar effect). Another interesting thing is that, when you are carrying a baby, everyone smiles at you. Actually they are smiling at Eli, but all he can see a big blurry blobs at 12 inches, so I doubt he can tell.
I will say carrying him just a few blocks has given me even more respect for Sherry toting him around for 9 months, especially toward the end. No wonder she was always so tired.
