I remember being in an elevator reading a letter giving me very bad news and realizing too late that the lady chattering about the new yogurt place had asked me if I had tried it. I was in my world and assumed she'd continued to talk to her friend. My floor came, so I left and moved on with my life. No doubt she felt I was giving her a chill.
I enjoy chatting at the bus stop, but I recognize that if strangers don't want to chat with me it is very likely not about either me or any chill.
As for PDX values, I've always thought they were pretty similar to Seattle's, so I'm not sure what distinctions to make.
I've only lived in Seattle, but I think of it as just as friendly as other places. But then, I'm the guy that has been hard pressed to find anyone rude in France. A lot of it is in how you approach people. Expect rude, receive rude. Expect a chill, receive a chill.
Edited to add: Phoo, did you ever regret giving me your scanner? My dad didn't need it after all, so I'm actually looking for a good home for it. You get first dibs, just to be safe.