How do you get your photos onto your computer? Let me ask you that?
Well, you're claiming that you transfer 56 RAW files per second completely from your card onto your laptop. My D60 has raw files that are about 6 MB each; that'd be 330 MB/sec transfer rate at your quoted 560 files in 10 sec. And that's a 6 MP camera, not the 10 MP 40D or 1D3 with their average 12 MB RAW files, let alone the 16 MP 1D4. Or does PhotoMechanic just give you previews off the card, leaving you still needing to transfer the files to the computer, in that 10 sec?
A point to note about the EyeFi - if you're shooting in an area where you have WiFi, the file transfer is going on the whole time you're shooting - it doesn't wait for you to stop, take the card out of the camera, walk it over to the computer, insert it into the card reader and start the transfer process. By the time you get to the computer, if you've been using an EyeFi, at least the first photos will be up ready to view.