Received mine today.
It feels good. I'm a slimmer guy and it's definitely a "slim" fit, compared to most the general fit stuff sold by the mass market name brands. This is a lot more like a higher end item you'd get at a smaller shop. I love the fit and feel. It's another layer, so it helps, but it isn't meant to keep you warm, especially against the cold or wind, it's a long sleeve shirt, basically.
Now it's just a matter of proper care, as it's just right, right now, so I can't have it shrinking. I'll have to make sure I follow the care instructions perfectly.