MR's article refers to his checking the images nightly, after shooting, not tethering up in the woods. It also refers to him missing a few shots because of focusing/alignment errors.
I'm sure for a critical shot (commercial work) you'd want to review the images before striking the set.
As for the image storage devices, I tried a couple and they are all funky IMHO - just use the cash to buy CF cards. I think you can save a bit with slower cards on the MF backs, as they don't need the fastest speeds for rapid shooting (at least for landscape).
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