I thought MAYBE the other scene maps could be accessed via midi but, I don't think they can? That's a shame, let's hope this little fix gets added as it will literally make the H9000 128 times more powerful as a live tool.
Just to confirm, no the Scene maps cannot be selected or activated using MIDI messages. The only way you can interact with the Scene maps is by using the front panel Scenes menu or using the Scenes menu in Emote. We hope to be able to add this in a future release.