Decided that the best way to recover from a hangover was to try the Brain Age VC promo, and found out that Ninty had already download it for me, thanks!
It's just the standard rom dump, both screens are shown on the Gamepad. The only extra option is to flip the screen by clicking the right thumbstick, there are no virtual console menu for save points or buttom remaps... not that they are needed for this game since everything is controlled with the stylus. The game works just as the DS one, if you try click the top screen you get an overlay warning that that section isn't touch screen. Sudoku's input recognition is just as good, but some reason the speech recognition seemed to work better? Plus I'm not sure if the DS download even works.