Want to create a rucksack with similar style, really like the idea of using the spring hooks instead of belt loops. seems simplier and the metal loops not being used can prove useful for attaching gear.
Arkiv™ Modular System
Arkiv Field Backpack Lets You Add Tons Of Pockets ( link :: http://missionworkshop.com/products/arkiv-system-bags/configure-your-field-pack.php#3 : )
acne arden bag
The "352" Roll Top Backpack by Atelier de l'Armée http://www.sprhuman.com/2014/02/the-bag-352-roll-top-backpack-by-atelier-de-larmee/