For those who don't buy NF due to the open top, there's always zippered organisers available.
I prefer using organisers not just to keep things in my bag neat, but also keeps the lining clean and SLG pristine as well as facilitating bag changing which I do 2-3x a week.
Why is that not an option? (Not being sarcastic, am really curious)
For me, I don't feel safe with only one zipper. I had stuff stolen from my zippered bag, so I wear a zippered organizer inside my zippered bag. I know I am much more security oriented than most people [emoji4]