The Octane 24 arrived and it is a really nice hydration pack with a robust feature set. To start out with, the Antidote reservoir provides a full 3 liter capacity, very useful. The right cargo pocket has a key clip, and the right shoulder strap has a tube trap. At the top there is a zipper pocket perfect for sunglasses and cell phone. The back has an exterior pouch that my cooking kit fits in comfortably. The inner compartment is plenty roomy enough for rain gear, a fleece, gloves, food and snacks, water filter, etc. The cargo pockets will hold small cameras, a GPS and/or compass and other small items.
The pack is lightweight, that's one of the key design features. However, it does not seem flimsy at all. The material light and strong. The stitching is high quality. I expect it to last. Also, the straps provide plenty of adjustment even for a big guy like me (6-1, 255 lbs). As I load it (light) it is plenty comfortable and doesn't shift around at all. It would not be so comfortable if it got heavy, but then again, its a hydration bladder, not a backpack.
For days in the outdoors it can't be beat. For overnighters I'll use my backpack. Very much worth taking a look at, this one.