Very cool, and a totally legit way to carry. You could also consider getting a ballistic soft panel insert to give you some armor protection.
I recently got a Hill People Gear recon pouch for about $100. It's for hiking, exercise, running, etc. It's fantastic and takes the weight off the hips and distributes to shoulders very evenly.
It's a great on-body option, with similar bag-draw techniques. Highly recommend the product. Smaller and lighter footprint than a larger bag.
https://hillpeoplegear.com/Products/CategoryID/1
