The X-1 actually has a little pouch and strap for carrying a bow in addition to the rifle scabbard. It is a great day pack, and what I use for turkey hunting. I have packed a whitetail out in my(empty) X-1. It was plenty full of meat but it just fit. It certainly wouldn't be my first choice for a backpack camp/hunt. Just not enough capacity for all my "junk", but I suppose the minimalists could get by for a couple days.
I just got a great deal on a J-107 Dragonfly
on ebay. Seems to be a versatile pack, expandable to carry in a camp and compactable for daypack mode. I wanted the 5000+ ci.in. capacity for backpack camping/hunting and the ability to pack meat without having to empty it first.
The J-34 is a little smaller than the J-107, larger than the X-1. So more capacity for day hunts or packing in a light camp.
Everything is a trade off. You just have to decide what your priorities are and decide from there. I believe them to be quality products and built like tanks. I know the Kifaru folks sometimes turn up their noses at Eberlestock and then the Mystery Ranch folks turn their noses up at Kifaru and on & on it goes. I'd like to have a Kifaru, just couldn't pull the trigger on $600+ for the amount of time I get to actually use it.
Eberlestock is a good value for the money IMO.