I'm also available to simply not using GDrive any longer. Any storage service will work, including (although not ideally) standard FTP.
Some other options/services I looked into:
- TeamDrive Portable - which had some issues of it's own when I last tested it
- Dropbox Portable AHK - I don't know it's status or how it's being maintained.
- Wuala had a LOT of issues when I last tested in a few months back. At the time of testing, it wasn't the least bit portable.