I never used multi cam in fcp7 so this is probably a lame question. I now have two clips synced as a multi cam clip and can see both clips in the viewer. Now what? I don't know how to cut between them. It's obviously early for a tutorial for a one-day old feature, but I'd love to know how to use this. How similar is this to multi cam in fcp7?
As far as switching angles is concerned, the multicam feature in FCP10 works about the same as the one one FCP7:
Drop your multicam clip in your project timeline
Play your multicam clip and in the Angle Viewer (where you see both angles of your multicam clip)just switch the angles by selecting them while playing the multicam clip. Everytime you select a different angle in the Angle Viewer this angle will be cut in your multicam clip on the timeline.
With the magnetic timeline it is vey easy to further refine your live cuts.
There is also a short explanation on the Apple site:
I have three custom keyboard layouts created. The "Default" does in fact update to include the numeric keyboard shortcuts with FCP X 10.0.3. 5 systems, all had custom layouts, all updated the default just fine.