The Kracken:"Absolutely wrong. The long hose and bungeed backup predates GUE and even the WKPP by a long shot"
OK, but the major support and promotion of this setup comes from the GUE/DIR fraternity.
Let's stick to the questions of "what is it" and "why".
They're the major supporters for using it in the recreational community. I believe most tech agencies utilize the long hose method extensively.
However, let's not hijack the thread.. it was about a bungeed short hose PRIMARY with basically an AirII backup. Horrible idea, donating air would simply not work.