I just wanted to start a thread about it.
The iPAD apps you can use for the SD 1000 are (e.g.) Set List Maker (with in-app purchase 'midi functions') and iMIDIPatchbay.
Both apps enable you to send bank and program change messages (in connection with an iPAD compatible usb/midi interface) to call up all the SD 1000 sounds. iMIDIPatchbay even allows to address 4 different SD 1000 sounds simultaneously to layer or split them.
I'm going to open a thread about a review of the SD 1000 sounds and these apps in the General Arranger section soon.

http://www.imidipatchbay.com/