DO not Import, just drag and drop into FCP X Events.
(First, under FCP X Preference/Import, un-check copy imported files, so it will only create reference files/alias)
I use both Canon T2i/60D and Zoom H2 to record audio. Because FCP X is able to edit T2i/60D files natively , I skip Importing the videos from FCP X, instead I simply drag and drop the .mov clips into the "Events".
My workflow is :
#1 Create new folder in my external drive, labeled whatever project I'm doing.
#2 Create subfolder called "Volumes" and have subfolders under that called 60D Card1, T2i Card1, etc and drag/drop the folder from SD Card to the corresponding folders, this is to maintain the folder structure of the cameras's DCIM, so that previous version of FCP can do log/transfer.
#3 I then create event in FCP X Project
#4 ISelect only video files from the volumes, (I usually go down to list view and sort "kind" to separate the .THM files and easily select only .mov files, another way of doing it is do a search on '.mov' and target only the main folder were all the subfolders of all the clips are saved so it will find them in a single search.
#5 Finally drag clips to FCP X Events.
#6 Begin editing immediatly as FCP X creates thumbnails.
The advantage to this workflow is that it creates only refrence of the clips under the FCP X event folder. (Very much like AMA for Avid Media Composer, but faster) Importing the clips using FCP X will create copies of files and taking up un-neccesary duplicates of 60D/T2i footage that does not need transcoding. This will save time and drive space from copying the files because FCP X only needs to render thumbnails.
When you right click on an a clip from the Events, and select "Reveal in Finder" you find your alias clips, not a duplicate.
When i found out about this method, I tested to see how smart FCP X is in re-connecting offline clips from existing project. I deleted an earlier event that I used Import method. I wanted to get rid of all duplicate clips and work directly from these reference/alias files. As expected, the clips in the project went off line because the events link to it has been deleted. I then did the drag/drop method of the original clips under a new event and under the Project Info, I chose a the new reference events of the targeting the new linked clips, and surprisingly enough, the project found all the clips as if they were never deleted.
Another thing I learned was that it will sort all the files in sequence based on the time it was created regardless of which camera the files came from. This is helpful for me when doing multicam because it will all be next to one another in the Events.