I think what you've pointed out is true. Once I learned BB, I've always felt like I had to decide between fast views with KO, or scalable logic with BB. When the modelbindings plugin came into my life, I was super excited to potentially have the best of both worlds.
It was immediately obvious to me, the downsides you suggested. In my simple case it was an append interface, not an edit interface, so I stubbornly worked around it by creating orphaned models that are bound to my user editable view, and then get added into the app focused collection once submitted.
It was immediately obvious to me, the downsides you suggested. In my simple case it was an append interface, not an edit interface, so I stubbornly worked around it by creating orphaned models that are bound to my user editable view, and then get added into the app focused collection once submitted.