Chris Wallace said,
"This is my understanding of how it went..
Ryan had a pack design in mind (he's had it in mind for a long time) and asked HMG to build it. They agreed and we now have the Porter. In the interest of full disclosure, I tested several revisions of the pack and also provided feedback on it. I know I don't get any kind of sales commission and I doubt Ryan does either.
Also, it is my understanding that Ryan had asked another pack builder for something similar many years ago, and was basically told to shove it."
Dan McHale's version;
Chris, I figure you are referring to me here. I was all set to make a pack for Ryan for his Arctic 1000 trip. The pack was going to be my basic widely spaced daisy chain design like the 4 or 5 other McHale Packs I had made for Ryan but made with Cuben Fiber. I was waiting for the Cuben Fiber and it came late and I recall that it had to come from Cuben directly. Well, the fabric came and I was blown away by the lightness of the fabric Ryan had chosen and immediately sent it to him 3 day UPS, at my expense, after probably emailing him that there was no way I was going to make a pack out of it. I did not tell him to shove it. I felt I had been put in a bad spot. He later, after the trip told me that it was a good thing he did not take a pack made out of the too light Cuben that he had chosen. He told me as it was, that he had damaged the ULA pack enough that it was obvious the Cuben fabric he had chosen would not have made it. I basically avoided and prevented a situation that would have been bad for Ryan, myself, and Cuben Fiber. That's my story.

