OX3LX (2570km) copied me on 6m JT65 earlier this evening. As far as I remember this is the first tine I have reached Greenland on 6m.
I remember working Greenland from the garden with 2.5W SSB and a whip antenna on 10m some years ago. I am pretty sure both these were Es.
UPDATE 0754 June 15th 2017: He spotted me again late yesterday.