I'm a backer, and I just finished the demo on my DSLite using an EZ Flash Omega and LOVED the entire experience! It played extremely well.
One request for the final game however would be to add support for the "boot with addon" function on the EZ Flash Omega, especially seeing as it's being recommended as a preferred method to play the game on original hardware. I missed being able to go from the game back to the card menu as I can with other games, rather than having to power down the system each time.