Is it possible to install F@H on a flash drive for borg purposes and run it off there temporarily on any computer? Except the installer forces installation onto the C:\ drive, but it would be a cool thing.
Depends which client. I believe that the console uniprocessor and GPU clients are portable (as in they can be run off a flash drive and don't add any files or modify any registry settings of the computer they are used on), but the SMP client is definitely not portable.