I've decompiled a compiled 2DA 2.b file to the uncompiled 2DA 2.0 Format and it works!
To try it yourself just downlaod THIS (
http://www.hazardx.com/swkotor/files/2da_demo.zip) archive and copy its content to your override folder. After that you will see that a solder char gets 2 times more bonuses on Fortitude, Reflex and Will per Level-Up. (Just load a savegame of a soldier char and your values should be higher than before.)
This is just a small demonstration. I'll upload a 2DA Decompiler this weekend.
[EDIT]
It is ready for download. Visit my new Thread (
http://www.lucasforums.com/showthread.php?threadid=121024)!)