I'm sure this Suggestion has already been posted at some point but....I installed SL on my FireWire drive, ran the updates, booted into SL then used migration assistant to import my user account. I'm going to test SL by running it for a week off of my FireWire drive. For anyone who is cautious, this leaves your internal HD with your previous system intact.
So far, not a single concern to report.
So far, not a single concern to report.