I flew DXB-LHR in 68A in Economy this morning. This seat has the benefit of about 6' of leg room (although slightly narrower as the tray table is in the armrest).

The curve of the window is noticable, however I did manage to get a fair bit of sleep propped up against it with a (provided) pillow. I was knackered though, having had to get to ISB at 00:30, and could probably have slept standing up.