I’ve thought about this dual desker problem. It always seemed wasteful lugging around a whole laptop and not really needing the battery and carrying around an extra inferior keyboard and screen.

My thought is to run off a live SSD. My idea was also to introduce a layer of virtualization and a copy-on-write filesystem with FS level syncing for backup. Then you’d have a full disk image backup so you could pick up right where you left off in a VDI if you lost the SSD.