What a great tool! There goes my collection of small old 1-8 GB USB thumb drives, just use a big one for installs.
A nice companion could be a small *PI like board with a script that scans repositories for iso updates then downloads them using torrent to avoid taxing the servers too much, then when necessary (but not more than once every N days to avoid wearing the memory) updates the dongle automatically overnight. Just stick the dongle when you're back at home and the next morning if necessary it is updated to the latest images.
A nice companion could be a small *PI like board with a script that scans repositories for iso updates then downloads them using torrent to avoid taxing the servers too much, then when necessary (but not more than once every N days to avoid wearing the memory) updates the dongle automatically overnight. Just stick the dongle when you're back at home and the next morning if necessary it is updated to the latest images.