Where did you obtain the information from that he was a drunkard?
I usually find, that those successful generals, or other than Boney - suffer from bad press - he also issued special fighting order for L'Armée d'Italie.
Though Boycott - Brown is useful, at least for those who cannot speak French, I find it disheartening that seemingly today it is a trend to believe in sources written in English only, without consulting the numerous French, Italian and Austrian sources to that subject.
Of course Scherer demanded re inforcements, when Boney arrived they were already there, Loano was a major brake through victory - but there only poor Scherer was in command it counts for nothing. In case Boney would have achieved it - its importance would have been published and hailed thousands fold.