Bill, the off site backup for just the .enc files is extremely valuable. The .enc backups and the imported items backups are very different.
It's very difficult to backup Amazing Charts as far as set up exactly for us without either backing up the entire computer (yes, you should) or having special software. The imported items can be backed up by copy and paste. Not saying to do it that way, but that is how easy it is.
I have to say that the restoration of AC with the .enc files have been consistent and, well, amazing. So far, they have been flawless.
But, as you know and have said, you would need Gbps and not T1 bandwidth to import Imported Items over the net. And, there are some on here with 40GB or more where the Amazing Backup would not be very efficient.
I am not sure how long it takes to back up 10GB on a network. But, if AC crashed, I would rather restore in one minutes and not one hour. I can add the imported items later.
Plus, there is no way Jon's servers could manage all that data.
