It can lather and bubble up as good as petroleum distillate. Not sure if your spit is that poisonous. By your logic water can work like a soap as well, it cleans shit! From the sound of it you are probably not that familiar with hand tools. Or maybe you are capable of punching a hole through your heat-form plastic toe stiffener using a paper clip.
Hmm. I am not sure if Berluti is an Italian "maker". Berluti has Italian ancestry but they outsource their shoemaking to Italy so they aint exactly a maker. #menswear dudes are no better than media guys or Russian pimps.
oh ya, and small electronic screwdrivers or watchmaking/repairing tools are great at cleaning brogue holes... they aint any bigger than shoemaking tools... always easier and faster to scrap off caked wax at leather edges/brogue holes than using renomat, degreasers, or dye preparers.