I think the XL yukon would be perfect over the large sitka. I am 6' 1" 180ish and it would be nice over layers. Not tight but not super loose. It fits slightly shorter like kuiu stuff does so if youre taller then you'd have to decide that. Not bad in my opinion. A large tall would be better for me though. It is not the new TR, I actually have that as well and besides changing the fit and elbow area there's not much difference. Pretty sure its same fabric and zippers even.