Well, just as I was about to QSY down to 472kHz, blow me if 10m doesn't open to the USA! N4AU (6976km) was spotting my 2W at -6dB S/N at 1854z and WA9JWL (6360km) at -17dB S/N at 1902z. 10m is an odd band - just when I was about to move off the band, it "comes good".
UPDATE 1922z: Interestingly, KZ8C was spotted by local G0LRD and KZ8C also spotted G0LRD too. But (certainly to this time) Dave has not been spotted by other USA stations.
UPDATE 2116z: KZ8C (6290km) was spotted here at 1926z. Since then, just local G0LRD.
UPDATE 2153z: A late spot at 2138z of G6NHU (78km) to end another day on the fascinating 10m band. Now QRT.