I would be very appreciative if somebody would confirm based on their real-world experience that it is possible to boot up a PowerMac off of an external Firewire drive running OS X 10.1.1.
Using what drive by whom?
I am waiting (24 hours) to hear from La Cie about this. They're one of the few manufacturers listing compatibility with X, but they have yet to indicate whether their drives can be used for booting in X. Also waiting to hear from QPS.
Intuitively, I suspect that Apple's Firewire support would be second to none, and I've booted up machines from external Firewire drives running OS 9. X, of course, changes everything.