These are just two different approaches to the same end. The Inuits used what they could get their hands on and over time made a good job of it. The original Walrus was designed by Norman Skene to use 1920's technology. Dimensional lumber,screws and glue. Skene was a navel architect. There is no reason to think that he would produce a kayak frame that would blow apart while on the water.
The Walrus is much more rigid because of the trusswork sides that form a beam. I can't figure why anyone would find fault with this setup. A variation of this is found on the most expensive kayaks made. Klepper stiffens its' frames by joining the top two stringers on each side with plywood panels. It may look different but it's a beam that does the same thing as Skene's trusswork.
If your in a hurry build a Walrus. If you've got time to burn (and don'y mind some string burns) stitch up an Inuit hull.
Charlie