Thanks Liam for the reply (you have a great website, by the way)
I went ahead and bought FCPX and I’m pretty impressed overall. If anyone else is wondering if you can import image sequences into FCPX, you cannot – at least as far as I can tell. It really is a shame, I figured that since they put Image Sequence front and center as an export setting, you’d be able to import an image sequence. But, alas, I can’t. It would be great to be able to select a clip from your edit, export it as an image sequence, work on it in Nuke or whatever and then replace the clip in your timeline with a new image sequence without having to utilize the color-shifting devil that is Quicktime.
If anyone from Apple sees this, if you do decide to add this feature, please do it the way it is designed in Flame/Smoke and Nuke where a sequence can be collapsed into a single item in the file browser and not the lame way it is in After Effects where you see all the files in a sequence and select the first file.