I read the bits about the San Salvador route, and I say Amen. I very much love that camino, but it has tried to kill me a couple of times.
As for "comfort zones," I had a snow experience similar to T2Andro´s up there in March 2009, when the path was still waymarked near the ground... I had to use orienteering skills to keep on the path. Later that year, in September, I went back with an English friend who had a GPS unit (we wrote the first English guide), and walked into a thunderstorm at the top of the Sierra de Cuchillos pass above Busdongo. It was the coolest thing... you could actually see water condensing out of the clouds before your eyes! And then...KABOOOOM! My hair stood up, we hit the ground, the whole world went blindingly bright!! The rocks behind Piers were smoking... The lightning bolt missed us by about three meters.
I RAN straight down the side of that mountain, despite the underbrush and snakes and cow patties and pouring rain.
Piers thought I was really funny. He took a picture, but it´s not something you wanna look at!