actually, I would refrain from purchasing anything on the EmuNAND as any downloads are tied to that rather than the console, which is even worse as if the SDCard breaks, corrupts, or gets lost, you lose any puchases, vs only needing to worry about the 3DS itself getting stolen, damaged, or lost as it is stored on the NAND, which under normal circumstances would not randomly corrupt, break, or get lost.
good luck trying to explain to Nintendo that you need your puchases relinked to your console as the games as the console lost its license to play the game somehow?
in order to get them to do that, you need to have your 3DS stolen and a police report filed, only then will they link purchases, and it would need to be to a new console as they will not relink it to the same console.
the best bet here is to use 2 seperate 3DS's. one Gateway and one normal. that way you at least have some sort of recourse (however limited that may be) to getting purchases back vs none if you mess up and forget to backup the emunand/or delete the backup then end up having the SD Card with the emunand corrupt on you.
having backups is still not good enough as you could still lose stuff by backing up the emunand, buying a game away from home, and having the emunand or sdcard corrupt somehow before you get to make a backup on the purchase you made away from home.
its cool the game was free and i was eager to see what would happen. I wont be making any actual purchases from the eshop.