In reply to Fraser:
> I suspect those who are precious about backing up whilst away on a trip have a camera body with twin slots........
For me that would mean upgrading to an X-T2 at about £1300. Don't tempt me........ and there's already the 100-400 lens I'd really like or this trip at about the same price!
> And for the record, 1000 shots over 6 weeks in a decent location sounds quite restrained.
I'll be deleting all the dross (ie most of my photos!) directly from the camera most days. 1000 is a rough guess at how many I'll actually bring home.