The Camel is a good example of the eclectic approach to crime that the Outfit took under Torrio and Capone--reaching out to non-Sicilians and even non-Italians who could contribute. Jake (Greasy Thumb) Guzik was Torrio's political protector, taught Capone everything about the Three B's (Booze, Broads, Bets) and became his Number Two. After Capone went to Alcatraz, Guzik ran the Outfit alongside Frank Nitti.
Interestingly, John Kobler, Capone's best biographer, shows an Outfit rogue's gallery of photos. He lists Humphreys as "Robbery Expert." I was under the impression that, in his later years, he ran the labor rackets for the Outfit.
YTB, that's a very interesting analogy between Humphreys and Hagen. Another non-Italian who could fit that bill (broadly) was Hugh (Apples) McIntosh, who was nominally Carmine Persico's bodyguard but was really his consigliere.