[bill from maine]

Hi,

I know it's possible to clone one Mac to another by starting the clone Mac with the T key held down (target disk mode), connecting a firewire cable, and then running SuperDuper from the other machine.

Question: if I clone a desktop Mac to a laptop, take the laptop away, use it for a while, then return and do the reverse (clone laptop drive to the desktop), will the smart update feature work with reasonable speed?
In other words, will the backup be fast or does it have to backup from scratch?