Nope, seen this before on hackaday i believe Be amazing if you could then use it as a flash cart in conjunction with a passme...and well play legitimate free nds roms
Ahhh your right, I completly forgot about speed issues, heh i still remember all the speed issues with old supercards and compact flash cards for the ds.... However, aside from gaming and some homebrew, it would make a pretty good media drive then, if you enjoy watching movies on the ds.....