A workaround to having multiple MIDI maps is to copy your modul8 preferences -com.GarageCUBE.modul8_25.plist
with your current MIDI map set as default. You give it an extension as in trigger finger or whatever and save it somewhere else( in a folder inside the preferences folder is a convenient place). You do this with all your different MIDI maps and then all you have to do is copy the appropriate file in the preferences folder (restoring its name) when you want to swap MIDI maps.
Its not the most convenient but it works and it has the advantage that you have backups of loads of other parameters too, just in case!.
I hope this helps