I’ve still got a Powerbook G4 system, and probably will keep it going for at least another year – longer if I can. And I’m still running OX X 10.4 (never saw the sense in moving to 10.5 on a PPC box).
It would be great if Scrivener 2.0 will still be a universal build, supporting PPC as well as OS X 10.4.
I understand why you might not want to do that, in which case I’d just stick with the current version of Scrivener. But I’ll wager that I’m not the only holdout with a PPC system.