This sums it up. The Ark looks like its going to be a good frame. The better foam, laser cut molle and simplicity of the frame design are all positives. Im sure the 4300 appeals to some as well. But this maniml, is.....odd. I just dont see why youd pick it over what they already offer regardless if its for whitetail or western day hunting.
I spend %s of my life in a stand, and nothing about it strikes me as a whitetail pack. I have no idea why youd want the vertical zips of the cinch while its hanging in a tree. And the last thing you want is to be digging around from a very small access point on top of the main bag. The only functionally 'whitetail' part of this is if you put a couple belt pouches on the front and leave the cinch at home. But, you can do that with any other bag they already make, like the Stryker XL, Hellbender or 22 mag.
Its not as functional as the Stryker XL/sherman or Hellbender as a whitetail pack or a western day hunting pack. And its not even close to as easy to access the load sling as those 2. The size difference between them isnt all that much. If the main bag zippers came down for a full horseshoe, it might be different.