Haven't flown it yet, but will be flying YVR-HKG-YVR in PE (or better, should the Upgrade Gods favour me) in a few weeks.

I hope the upgrade comes through at least one way, because I'm interested in trying out the J seats. They seem to get a lot of negative reaction on here and elsewhere online, but they look identical (except for fabric) to Swiss' long-haul J seats. I flew that seat last year JNB-ZRH, and liked the seat a lot. Preferred it to the Executive First pod I flew ZRH-YYZ immediately afterwards.