Hi Thax,
Please take a look this.
http://forums.creativecow.net/thread/30/854719#854729
Also if you Google "df vs. ndf" you will get the bottom line, And that is in about 1 hour the time codes will differ about 4 seconds (The actual amount of frames will be the same if the only difference is DF vs. NDF)
I agree, Some projects require no syncing, they match up, Others don't.
I may be incorrect on this.
John