This is music to my pants. Trouser jazz.
I too would prefer a Hu Card release, because of that bootlegger guy selling shit, and also so I'd be able to play on my GT.
However, the most important important thing to me are:
256 x 224 resolution (shouldn't be a problem)
accurate bubble background flow
accurate secrets
As long as it's accurate as possible, I'd go for any format necessary, but I would prefer Hu Card over SCD/SGX.
But yeah, trouser jazz