+1
I have almost always had someone sitting next to me in E+, even in the exit row.

However, I haven been upgraded on every segment except one (SFO-SAN) since I became 1K last year. On that segment, I was in 21C. I was #2 on the upgrade list. The passenger who was #1 was sitting in 21A, and he was upgraded just before the doors closed. I then became #1 without an open seat in First Class, but the person in 21B moved over and left the middle seat empty. That's the first empty middle seat I had seen in a long time.