I would advise AGAINST a Bjorn. Caused my DD to have hip dysplasia and resulted in subsequent physical therapy for months, in addition to a helmet due to the resulting torticollis.
Oh I am so sorry. You're the first person that I've read of an actual, documented problem, though the thought process of the Bjorn being bad for the pelvis has been around (I'm a retired chiropractor and I just have to look away when I see them being used).
OP, I honestly would not try to get ONE carrier to make BOTH of you happy. I know in my house, DH liked just holding DS better than wearing him. Once DS was around a year old, he saw a Maya ring sling that he liked, and we bought it. He liked it, but really found that carrying DS was best for him. Meanwhile, I cannot stand ring slings, I don't even like the look of them!
I had a Moby, I had a Hotsling, I had two Mamma's Milk slings (got them too late, though, he was already too big for me to do a hip carry without hurting myself, by the time I got in on the co-op for those slings, which was so sad because I think I would have liked them SO much better than I ever liked the Hotsling). I made two Moby-type wraps ("made" = "bought long lengths of fabric and tied them like you tie the Moby") and liked them. We ended with an Ergo and wished we'd had that from the beginning! It's ergonomic for baby and for you. Especially since you don't wear baby facing away from you in it. Helps baby's state of mind as well, since they can interact with the world to the sides and behind you (which means people aren't making googly faces at your chest, LOL, always a nice thing to avoid), but can hide his/her face when it all gets to be too much).
If you do want to try to make you both happy with the same thing, I'd suggest the Ergo with the infant insert, and depending on how big hubby is, with the clip extender. See how it goes!