Anyone using Mark2 extension for UM2+?

Hi all,

I have an UM2+ that produces nice pieces. The only pain point I have is that it lacks dual extrusion. I've seen a nice hack called "Mark 2" that looks like a solution, but I can't find modern information about it (most is from 2017 and 2018).

Does anyone have that improvement installed and is working with it from octoprint? Any opinion on it?

Thanks in advance for your help.