The Nokian One is a very different tire from the WR G4. The Nokian One is not an all-weather tire, but is an all-season. That means for this part of the world it is a three season tire, since unlike the WR G4 it is not suitable for heavy snow or ice. On the other hand, the Nokian One is supposed to be longer wearing and to have better efficiency than the WR G4.
My experience with the Nokian One tire so far has been excellent. I had them on from May to the end of October, before I switched, as usual, to my dedicated winter tires. I had complete confidence in them when they were on my Model 3. And although I would not drive them in extreme winter weather, my understanding from online info I have looked at is that they are better than most all-seasons for at least light-duty winter conditions. So if you are in coastal Oregon, they might be fine all year long. If though you are in the mountains or head into the mountains on a regular basis, then it might be better to stick with all-weather tires.