It could, but i find it easier cause i'm somewhat of a basic programmer. You'd probably be better off getting the editor (http://www.mtnsys.com/faq-fcb/PCEditorBeta.htm) and sending the SysEx message to your FCB, it'll all be configured for ya. So, with that in mind, you could set 5 and 10 to not send patch changes, but instead, send Note On/Offs, which you could assign to next/previous sound. Although, I find with the FCB, that its much easier to just use the numbers as preset selections. The way mine is setup is, on banks 00 to 08 on FCB, the buttons 1-8 select the appropriate patches in GR3, and in any FCB bank, 9-10 control (and save once releasing the button) the current patches volume. And FCB's bank 09 is used for loop machine. This works best for me.