True dat. It was recommended to me by some engineers (in real conversation ) who use it quite a lot.I might add that there is very little discussion about this plugin on the internet. It has not generated much interest.
Personally, I toggle between this one and Precedence for similar tasks. Sometimes one is better, sometimes the other. Recently i had great results with an overdubbed alt saxophone choir (6 part voicing, block chords, with 2-3 doublings [i.e. 16 voices in total]) that I recorded with a Neumann in mono.
The trick is to use both the upmix gain and the brilliance knob with sensible ears; these make huge differences ("huge" in the sense of: these sliders can decide if the result sounds as if the source stands in a aluminium garage or if it's brilliant – at the same time quite dry but with a very defined sense of space.)