This jacket is nothing short of excellent. It is incredibly warm (core loft body), light weight, packs down really well, and looks good out climbing or in town. To be honest I'm surprised I haven't seen more around. I was after something warmer than my windproof fleece, but didn't want a full on 'sumo' style down jacket. The synthetic down (core loft) in this one does the trick without the bulk of bigger jackets. I've been using it without a shell in dry days and it cuts the wind and keeps me warm without any trouble. It easily fits under a shell jacket, so no problem in the wet either. It has tight but really comfortable cuffs on the arms, toggles to tighten the jacket base, and a close fit which helps keep warm, and gets the jacket out of your way when climbing. The hood doesn't have toggles to tighten or adjust it, but it again is pretty snug so keeps the warmth in.
In summary a perfect piece of kit that is worth every penny of its price tag. You won't ever leave home without it.