As we are near the peak of the Perseid meteor shower, I have been on 6m MSK144 RX overnight and this morning. I decided to look around 50.280MHz rather than the "new" frequency recommended in WSJT-X v1.8. So far, 9 countries spotted on 6m, although not all of these will have been via meteor scatter as there is still Es on 6m.
UPDATE 1520z: 16 countries spotted on 6m MSK144 RX so far today.
UPDATE 2122z: "Just in case", I have just done a manual time sync in readiness for the overnight period on 50.280MHz MSK144.