That would break if users ever added bookmarks or cookies on the mobile device. Firefox Sync works in both directions (or N directions, since you can have an arbitrary number of devices).
Posted Jun 27, 2012 0:30 UTC (Wed) by khc (subscriber, #45209)
[Link]
in practice, firefox sync seems to only show me open tabs from the last device. So if I have 3 devices with Sync, I can't see the tabs from the LRU device.