I have the same one and can report its excellent value for the money. Don't know how it compares to a "genuine" DJI unit, but that's five times the price and really can't see how it can be much different. It's well made, light and very comfortable. I also modded mine to enable it to safety carry an iPad Air.
Only thing that I would improve from the looks if it is adding a "sternum" strap.
Amazon.com : ONE 3/4" Nylon Webbing Sternum Strap Backpack Chest Harness for 1" Webbing : Sports & Outdoors
So the bag does not shift when riding into the twisties. Trying the two backpack straps together will aid in stability. I am going to try the slip over type that goes around each strap then buckles together and see how that does.
Then if I want even more retention I will take the bag to my local tailor and have them sew each exposed end of the sternum strap to the bag straps.
Should make a great way to carry.