I'm so devoted to my TB bags, but I struggle with anything that goes cross-body. A cross-body strap is uncomfortable on my chest. I also tend to collect things throughout a day (two kids handing you stuff all the time will do that), so after awhile my bad gets heavy and my back hurts from the extra weight on one side. I've tried using my Little Swift, and while I love that bag, it falls over too easily and stuff ends up falling out.
What I REALLY want, oh Darcy, if you could pass this along I'd be SO grateful, is a purse/backpack. A small 8-9 liter or so bag that has light straps to wear as a backpack. Ideally it would have zippers all around so things didn't fall out. Perfect for a wallet, phone, and water bottle, and maybe a paperback book. Like the MCB but with straps that can go over your shoulders!
Is there anything like this on a future drawing board? :)