Thanks for pointing that out. So, it's still possible that Gateway won't fully support a 64GB MicroSD, still there's no way to test this out without MultiROM support.
yea cant really test its full compatibility without either getting a game over 32gb (none exist or ever will as far as i know) or multiple roms totaling over 32gb on the card..
id assume if they say sdhc only in their support emails its probably exactly like the dstwo limitation then.. dstwo site also says maximum size is 32gb sdhc for their card.. but sdxc works just has that addressing issue... basically the card cant see anything written past the 27gb mark.. but it reports the correct size (59.47gb) and everything it does read loads just fine...