For all of the reasons posted above, I was checking my seat assignments on my 777 regularly. When I saw a completely empty seat map in J last night right before bed, I had a similar thought as upthread: "Some folks are going to be upset."
Still, I felt no compunction whatsoever assigning myself to 1K.
We'll see how it plays out over the course of the day (week?). Glad I could flag this for folks to babysit their seat assignments.