That's what I'm planning with my wife and I once I get her updated.
Originally Posted by mg48
We will both use the same iCloud account to share photostream (to auto import both of our camera rolls to both of our iPhoto libraries) as well as calendars and find my iPhone/Computers.
I will use the mail and contacts sync via iCloud as well, and backup my iPhone via iCloud
She will sync contacts via itunes wifi sync, and her backup will be local to iTunes via wifi sync also.
Wifi sync for both of us will automatically push our newly imported (from photostream) iPhotos back to our phones at the next wifi sync.