Thanks for noting that , Steve. I was taught that CH-SL is a Himalayan assault strategy designed for moving progressive camps up the route, back in the day when Himalayan technique was much frowned upon when it began to encroach on Alpine assents ( Eiger North face, Jungfrau etc). Himalayan survival strategy, not Alpine acclimation technique. Note that the term is "climb" high, not "hike" high. Fair assessment?
