I flew LAX - HKG (B744) a couple of years ago, and while I liked the idea that I didn't have someone reclined into my knees for 12+ hours, it got tough during the wee hours to find a comfortable sleeping position. I'm 6'0" and it got cramped after a while. BUT, the pax in the row in front of me wasn't reclined into my face.
To their credit, CX had very attentive Cabin Crew on that leg and on the return leg to LAX, and the IFE helped a lot. Meal service was stellar in comparison to US domestic fare.
I give CX credit for thinking outside the box, and it was a vacation trip, so my mindset throughout was to stay mellow and enjoy the whole thing.