I have now swapped to 472kHz (630m) WSPR. The last 10m WSPR spot was just after 1600z. On 6m WSPR G8VDQ (93km) was copied several times until I QSYed.
UPDATE 2133z: No-one has yet spotted my 5mW ERP on 472kHz and best DX so far on RX is a DL at 983km. The night is young though!