Neenee - Yes yes and yes.

You can use the HAB to feed vertically, my girlfriend did it and worked wonders for her chucky bubba
Have a look around - what may be confortable for you may not be for hubby...I love the Ergo, DH hates it, wont wear it...The Close Carrier he was much more sold on.
The Comfy Rock I Charlotte hated, she didnt like the position the slings put her in. So you will most likely need to try one and find out which works for you bubs and hubby.
I know some people who have about 5 or 6 carriers of different sorts - different carries, different support, different wearers, and time periods of wear...each has a specific use.

Lots of good reviews on here for the BabyHawk Mei Tai carrier, I looked at one and it was great, just never got one in the end.

Oh some carriers, ike the PEanut Shell are sized, so you could always get on type of carrier, just one size for you and one for hubby.
Find someone with some and try them out see what you think