Hello, all users...

Sorry, Swift Arf, but the real short answer is: YES, you can store patches in the JV1010. This little module is totally functional as any other JV/XP synth.

The memory is organized as follows:
Preset: as it says, read-only.
User: here is where the users patches are written.
Temporary area: is where a patch is loaded for playing or editing.

If you edit a patch, this is done in temporary area. You have to save the edit to a user location to preserve it after power off.
In Sound Diver, drag the patch from the box "Temp Patch/Patches/Performance/Rhythm" (whatherver you´re editing) to a user location. After that, press Ctrl+T to transmit the patch to the equivalent user location in the JV1010.

Read the supplemental note from Roland website about using JV1010 and Sound Diver: http://www.rolandus.com/SUPPORT/DOCS/SUPNOTES.HTM
Also, there is some online documentation in the SoundDiver CD-Rom (the printed manual really sucks..)

Mgomes