Asking an SD7 to load factory sounds from the SD1 is a bit like asking a PSRA3000 to load a factory sound from a PSR8000 its just not necessary as they are lower quality samples on the older model. If there are specific sounds they have in mind its very easy to create them using the custom voice editor. You also have to keep in mind - Ketron are very on the ball when choosing their technology platform. The SD7/40/9 are Ketrons 4th major technology change since the MS series.

Styles are a different matter though - the SD7 and SD40 are the most backward compatible models yet. I have succesfully converted styles (on the SD) going right back the the X1 with only minor tweeking needed (drum kit selection was different on some styles and the organ voice on lower 2 was sometimes an octave too low).

If your friends buy from the UK they get around 380 additional styles pre installed if required and if they ask when purchasing there are around 30 additional sounds for the SD7 so far (more being added)