That is a potential use I hadn't thought much about.
I guess my dream workflow would be to come back home after a day of shooting, turn the camera on and just see all the raw files appear on my computer. And since the Eye-fi is 'slow' for shooting I wanted to shoot onto the much faster SanDisk in the first place.
I find right now I keep forgetting to put the SD card back in the camera after transferring so the EyeFi would save me there, but at the cost of a much slow transfer speed.
---------- Post added 05-10-2016 at 11:05 PM ----------
And I was too slow. The prices on the cards just shot up $30.