Do you think, using something similar to hamachi you could trade over "local" wireless with other people using hamachi? similar to how hamachi allows people all over the world to play together and the game thinks it's over a LAN.
If you can do something like MITM with ad-hoc then sure.
A lil off topic here but does anyone know where I can download the X&Y Sprites/Models of the Pokemons? The ones that use Pokemon Showdown. I have seen someone here with 3 of them in his/her sig. Anyone know where?
You mean Sheimi?
Anyway you could try downloading from the Showdown webpage.