There are, if combined with a TATL redemption (e.g. EU/NA - Doha - BKK/SIN/others) where the TATL leg will be in J (hopefully Qsuites) and the DOH-Asia leg can be F on the A380 for sometimes the same Avios as J on the A380 for that redemption. They don't last long and there's just so many A380 flights. It's doable if lucky, flexible and timely at the saver rate of 95K or the flexi rate more readily, albeit double cost, at 190K.