When every gram counts
I'm amazed how light this jacket is and how well it packs down to almost nothing, so much I'll just put it in my laptop messenger bags when I travel for just-in-case situations. It is certainly not as burly as 3-layer Goretex Pro Shell but the use-cases are just different, and personally I find most of the latest gen Goretex PS jackets way to stiff and noisy. The M10 is great for my intended uses: hiking, biking, some running, skiing (during certain conditions). It is a study in minimalism.
Only gripe: a little flap to stove down the hood would have been nice. I'm sure some people would want more pockets, I'm OK with it.
Watch out though - that "mango" color is STRONG, more like signal orange IMO.