The OR Ferrosi is a nice jacket. I personally couldn't find it a place in my system - too breathable to kick a tough wind, I'd rather pack my rain jacket or wind jacket. I could see myself wearing it around casually or on hikes.
I haven't checked out the Evo in person yet. For me - it fits the same spot that a softshell does. I love the concept but it never makes the pack. Too heavy for the warmth, while not waterproof.
I'd highly recommend a wind shirt over this. My Mountain Hardware Kor hoody is 5 ounces, fits in my pants pocket, quiet & is very wind resistant while breathing a little. Also, significantly cheaper than this Sitka piece. Not to knock anyone who loves it but I can't see a useful place for it. It weighs almost as much as my rain jacket and 3x what my wind shell does.