A few more thoughts as I’ve tested the seat in lie flat mode. To this day, I still find the Collins Diamond seat on the A321T incredibly comfortable to sleep in, lack of direct aisle access aside. So the XLR seat is a step down for sleeping- the foot well is a bit tight, and the length is going to be an issue for anyone over 5’9” or 5’10”. And there is a very noticeable gap between seat cushions- so hopefully mattress pads will be provided for the transatlantic routes. But of course, it’s incredibly private when you’re laying down, especially since your head is away from the aisle, so I guess it’s a trade off.