That's why I bring both. The bladder can stay in my big pack at spike camp if there are water sources available during the hike/hunt to fill the bottle.I was told from someone spending all day out there that carrying one large bladder or bottle create a lot of weight. They suggested using a filter straw or pump. But the problem with that is you may not always be near water
I like to use the Kuiu hydration rig with the bino harness when not using my large pack when I know there won't be water source when away from camp.