You can navigate through preset with a Mod Duo or a Mod Duo X because it has two endless knob. But I don’t know if Dwarf knobs can do that.
But you should be able to assign preset navigation to a footswitch. But only one footswitch can be assignated so you will be able to navigate through preset in only one way.
I want to revive this topic because I just discovered it and I’m surprised it had so little attention. Indeed, having the possibility to browse the audio file list with an endless knob in the device is an essential feature. Without it, it makes the plugin usable almost only in the Web UI.
Is there a technical problem that prevents the “Audio File” parameter from being assignable ?