Hi tL One
hm, you are right that’s mentioned on the tools page but not actually included with Duplex.
There was a 90% finished version, but it was never completely done - let me give it an extra look and see what can be done about this.
Note that Duplex is about creating controller configurations that do exactly what you want them to do. You are “mapping” things using these configuration files. Useful info here.
Now, I have no idea what you would want or expect, but I could create something that worked in a similar way to how the MIDI template (the link you provided) has been set up?
Hey D’, now that would be pretty awesome. Don’t know how much work that is, I am pretty sure I can’t pull that off myself though… 
Besides that I think that a maschine template would be an excellent addition to the duplex templates anyways and would help me a lot
and certainly others as well for sure. And that old template had pretty much everything I would need.
Let me know if you can come up with something without too much effort or hassle. That would be ace.
Best,
tL.