But timemachine won't boot on its own, correct?
No. But, at least with 10.6, you just boot from the install DVD and restore everything to exactly the way it was. You can even pick which day you want to restore from.
I've only done a restore from Time Machine after installing the OS. Are you saying you can skip the install the OS step? This is what an Apple tech told me but I didn't believe him because I've always installed the OS and then "migrated" from a TM backup.
You don't need to clone them together necessarily. I run 2 backups 1 just for my Home account and 1 for my OS (SSD). Is that how apple sets up the SSD/HDD combos? I don't like Time Machine at all. Unless you are technically challenged or lazy it takes way too long to do what it does. Ever hit permissions issues on TM recoveries? Thats the kind of fun I'm talking about. "Your Copy failed for an unknown reason" Apple does not give you any feedback as to which file etc... No, Disk Images have never failed me, they are portable, bootable and can be managed by a ton of software.
I've only done a restore from Time Machine after installing the OS. Are you saying you can skip the install the OS step? This is what an Apple tech told me but I didn't believe him because I've always installed the OS and then "migrated" from a TM backup.