In reply to terray:
Im a big fan of lots of thin, light layers. More felxiable and hardly any extra weight.
I've recently started using a Patagonia Ascencionist Jacket and love it. Haven't put a hardshell on yet this winter! Its very much what i would think of as a pure softshell (windproof, fairly water resistant although it will wet through in prolonged rain, and most importantly VERY breathable!
I usualy wear/ carry a merino base layer, micro fleece, lightweight synthetic gillet, softshell, hardshell, lightweight belay jacket. This seems to work pretty well for me. The only alteration i would make is to replace my shell with a ultralight one as it stays in the pack for emergency/ really nasty weather.
On the walk in i usually wear either just base layer or base + micro fleece. Any more and i'll sweat to death (i run hot). Hardshell over base layer if its raining.
When climbing i wear base, micro and softshell. Sometimes the gillet under or over the softshell depending on how cold it is.
When i stop either put the gillet or belay backet on, or both if its really nasty!
Hardshell stays in the bag the entire time once i'm high enough for it to stop raining and start snowing. Hence why i would like a lightweight one.
I love the flexibility this gives me! Whatever the conditions or whatever im doing i'll be pretty comfy. Lots of light weight layers don't weigh much more than fewer, heavier ones! My belay jacket and gillet weigh about 650g combined. Most standard belay jackets are anywhere from 600g-1kg!
Also tried Montane Extreme but find i get far too hot on walking, no matter how well vented it is!