I'd bet Steve had used/tested/changed the pack well before handing it out to be field tested. He talks about being generations ahead of the current offerings quite a bit on the podcast.#truth.
Wouldn’t compare myself to a killer like you. But - got to make some noise in hopes of being heard and maybe getting a shot and providing some input- either way they would get my money on a K4.
Get that rifle, pack and good luck up in the sierras.