Multipads are easy to edit in a sequencer, after all they are just small midifiles.

Another good thing...If you find one part of a style you like, example guitar riff, then load the style in a PC sequencer and copy & paste part to produce a PAD.
In sequencer PADS should be set at Channels 1.2.3.&4 and saved as .mid type 1 then rename extension.mid to .pad