both. one of each. worked for us

pram was good when doing a fair bit of shopping, or eating somewhere in the middle, or when it was v warm.

carrier fine most of the rest of the time.

DH much preferred pram, and was the at home parent from DS being 9 weeks. He hardly used the carrier at all, so it was good we got both!

Also, had always planned on heaving #2 v soon after #1, so slings for 2 not workable here ...