From South Africa CX are currently offering a companion special in F during April and July to the Far East - buy one get the other at half price. So for ZAR100k (less than $9.5k) 2 people can fly JNB to Tokyo in F all the way.
It does seem as if they are struggling to find takers for their F cabin ex ZA. Bit odd to offer F specials if they keep changing equipment though.