So I got both of these over the holidays to compare since I got good deals on both (20% off at Dicks for the Daiwa, 20% off at TW Blackfriday for the Okuma) with the intent to only keep one. Here's a quick take on both.
Daiwa Tactical Backpack - It is pretty lightweight (guessing 1-2lbs), and about the size of a normal backpack. It comes with and holds (3) 3600 tackle boxes that are accessed from the side of the pack. The best thing about the storage system is that they slide into and out of a pre-installed rigid plastic rack system. What I mean is that the 3600 boxes aren't stacked on top of each other, so that if you take the bottom box out, the top 2 don't fall down, or if you have heavy tackle boxes, they would weigh down the bottom box making it hard to take out. The leader spool holder is attached by velcro, and it can be moved to either side of the backpack. The sunglass holder is nice, but not necessary IMO, my sunglasses are going to be on my head or around my neck, I have no need to put them in a backpack. It has decent storage options and comes with little plastic cases inside the top compartment which are stored vertically in pre-stitched pockets, nice for small terminal tackle or split shot size weights. There is one thing I cannot figure out, there is an open container thing on the upper part of the backpack, called the Booger Box (I think).
Okuma Nomad Backpack - This thing is huge, I mean it's about the size of a European style backpacker. It's also very heavy without any tackle, I'm guesstimating 10-12lbs. It comes with and holds (2) 3700 boxes, and (1) deep 3700 box which are accessed from the front of the pack. It also has tackle box dividers, but they are not rigid like the Daiwa. They're made of foam insert, covered in nylon material and are flexible and attached inside the backpack walls by velcro, basically they're not all that functional. Removing the bottom deep 3700 box, with nothing in the tackle boxes was noticeably cumbersome, since the weight of the top 3700 boxes was applying pressure downward, creating some resistance. The main compartment is huge, again because the pack itself is very tall. It doesn't come with any other tackle boxes, but this main compartment would fit 3600 boxes stored flat if needed. The pack has a very sturdy handle on the top, and a cross chest buckle on the chest straps ...necessary because this thing is going to weigh a lot when loaded.
Overall I like the Daiwa more, mainly because of the weight and size. I'm primarily a bank fisherman and trek some distances to get to some spots, and while it would be nice to carry an abundant amount of tackle, I think loading up the Okuma would be too cumbersome. I keep all my tackle in 3700 boxes, and that's the reason I wanted to check out the Okuma, but my work around with the Daiwa will be to create little fishing kits in the 3600 boxes depending on the conditions.
Edit: Here is Daiwa's response on what the Booger Box is for: It is just an easy access accessory box. When you are tying on a new rig, setting down a few hooks or weights.... Just a tray to hold small product instead of sitting it on your lap while you re-tie