Is there a miniSD rumble version at all? I didn't know..
all I can tell you is that the rumble feature is absolutely useless.
We have received the SC Lite a few days ago and are a little confused.. it seems that the rumble features are limited to just assigning the rumble engine to a button. Meaning when you press the button the SC will rumble. Not only the rumble engine isn't great quality, but having that shit rumble every time you press one of the button is useless and even annoying.
I hereby recommend you not to buy the SC rumble but to go for a normal Supercard, because normal supercards have GBA support. And GBA support is seriously more important than a useless rumble feature
Hope this helps.
You can also wait for the review, hopefully we find out more features... Oh and also the SC Rumble is not compatible with rumble games (eg. Metroid Pinball). The games just do not detect the rumble pack.