I've been seriously considering it...only problem is that I don't think that the mifi data plan would get me off the hook for my current line.

Plus, I've been thinking about it and I'm wondering if one of those usb drives that you plug in might be better in the long term due to the difference in size, I'd bet you could even tweak it like Craves1 did with the addon SD card for N810...but the issues with this would be having drivers and probably worse battery drain.

..but trust me, I've been considering THAT option like you wouldn't believe.