I'm only a week in and am planning on getting a second one so I can keep one in the car and have one for around the house!
I've not had much luck with over the shoulder carriers, could never get them to sit comfortably and definitely couldn't wear them for long periods of time. But I needed SOMETHING to give me some relief from a velcro baby. My boy is 6 months old and being able to to have him rest comfortably on my hip without it taking extended strength from my arms has been amazing. The first time we tried it out, he fell asleep against my shoulder within 10 mins. Instant win!
Game-changer.
(It's also a gorgeous design and has the perfect amount of storage for phone/keys for those quick school drop offs!)