[whpalmer4]

There's been a solution all along. Use the Omni Sync Server to store your documents. When you want to open a document, copy it from the OSS to your iOS device (Macs can mount the server in the Finder). When you are done making changes, save or export back to the OSS. Yes, this isn't as speedy as making use of a local copy, but you don't have to worry about keeping the local copy up to date.