Lordx,
You know this for certain? No workaround? I'm definitely beginning to get thaat impression. Get a "that application or control panel not supported by classic" when go to launch fcp 2, don't evven get to the rregistration screen.
Also, I was running fcp 2 under classic in 10.2.3 on my beige g3. But I had to boot into classic to do this.