Just returned from TLV to YUL with LX.
Sat in 12A on LX-257 TLV-ZRH & then 8A on LX-86 ZRH-YUL.
So both legs in the "throne seat"
I found the extra space to be great when seated or in a lounge position, but I found the footwell to be too tight and did not really sleep great.
I did find a sweet spot in a sort of "Z" position though, and that worked out.
This was my first time flying on LX J class, service and catering were excellent- the seat was pretty good too. Next time I'll try the K seats and see if those are more to my liking