Far more likely that the trainer for the main game will include options for the character creation process. It's due out in 3 weeks, so I can't see much point in a standalone character creator trainer.
Well, as far as I can tell so far, it "might" be possible to import a character with all skills already achieved, if you get the skill IDs from the toolset, and edit the XML file for the prerelease characters. Haven't tried it yet, but by looking at the XML it seems entirely possible. Also, it might possible to change the gear that's currently equipped as well.
[Edited by myrmidon, 10/14/2009 6:40:12 PM]
-EDIT- XML file is only produced when a character is uploaded to the Bioware Social site. It seems to the key to editing is in the *.chr file that manifested by the character creator, in case anyone cares.