so if it's not documented or mentioned at point of application and your not aware of that law, how would someone know about the reporting! I haven't read anyone who has obtained one say that they have been told to report. Sarcasm is the lowest form of wit. Guess it humours some.
There is nothing written about the DTV needing a 90 day report, its a 180 day multi entry visa, I've read this, but there is nothing from the authorities to suggest it.