Glad you like the blog but I think you are missing the point for your own objectives. The Peak XV is an incredible jacket, just not very useable in the lower 48 outside the dead of winter and in some really cold places unless you want something to sleep in. Seriously, I have one and it gets little to NO use in WINTER. No need for one in the Cascades in summer or fall. Compared to the jackets I will name below the XV is heavy and bulky to pack.
"Patagonia Capiline 2 (already have)
Arc'Teryx Atom LT Hoody
First Ascent Peak XV Jacket "
Two Pata tops might be OK, one (a lwt weight) would likely better under a Atom Lt. Add a Pata Nano puff pull over with that Atom LT and you'd be set for most winter climbs. Use the Nano pullover in warmer conditions without the Atom Lt over a R1 and a lwt Pata top. I used this combo a lot this winter in the Alps. If you want something warmer try the Atom SV to use over the Atom Lt. I wouldn't suggest it for what you are doing but it is a warm option that works well.
More here on the Nano:http://coldthistle.blogspot.com/2011/04 ... -over.html
A few pictures scattered through out the blog of my pumpkin orange Atom SV.
My thought is you are way over thinking this and planning on being way over dressed.
One trip to Muir will likely change that mnd set.
The Atom lt on the blog can be found here:http://coldthistle.blogspot.com/2011/02 ... od-is.html
Another jacket I am very excited about and used a lot and when not in use carried in my pack this winter is the Brooks Range, Cirro Hoody.
It might be a better jacket for most of us than the Atom SV.http://brooks-range.com/cirro-hoody.html