Depends how you strap it I guess. I envisaged using the webbing on the ‘front’ of the bag, having the zip facing the rider whilst on bike so you could open it whilst riding. Ideally having it strapped in such a way to keep it vaguely ‘upright’ but I probably depends a lot on how much weight you have in it and how you strap it.
If you have a klickfix you could easy mount it on it and use while riding. Ofc then it adds weight, but maybe cheaper alternative to other barbags.
There is a picture also when it’s open “mounted” from front webbing, could be open while riding but possibly could drop stuff.
Depends how you strap it I guess. I envisaged using the webbing on the ‘front’ of the bag, having the zip facing the rider whilst on bike so you could open it whilst riding. Ideally having it strapped in such a way to keep it vaguely ‘upright’ but I probably depends a lot on how much weight you have in it and how you strap it.