Every time I do a shoot, when I bring the RAW files into workflow I also export them as fullsize jpgs. Those are what's sent/stored in the cloud (rsync.net).
I do this in the interest of saving space/money/time -- I am not a professional and I only have 768 kb/s upload (if that).
The mirrored raw files cover idiot mistakes/disk crash, the jpegs in the cloud covers the more catastrophic fires, theft, flood, etc.
In terms of archiving there is no professional solution. Hear me dev's? No quality professional solution. I'd gladly smash $100/mo in your pocket for one.