It is very clear that the people contributing thus far to the Maltese street word 'hamallu' are what are know by Southerners as 'pepe' or better snobs - originating from the title 'sine nobilitate' - common, but typically wealthy stuck-up people who typically live in Sliema, St. Julians, San Gwann (not as many today), Swieqi and that side of the harbour as to say. But 'hamalli' are also present in these communities, especially were things have gone wrong.
You need to look at Maltese society in general to understand:
The Nobles - a dying breed, based in Mdina but also present in the countryside palaces and estates. Once powerful, today many effected by having to pay taxes and lack of resources to squander.
The Elite - those who work on behalf of the many who do not, humble, honest, quite well off but pay their taxes and make sure there is enough to go around to keep the nation going forward. - These exist in all communities and there is not North and South divide.
The Pepe (snobs) predominantly in the Northern Harbour area. Children of rich parents who made it well after the 40s and moved to nice residences on the coast. Now they have ended up spending their wealth unwisely and take out loans to keep up appearances.
The Hamallu - mainly proletariat, found in abundance in the Cottonera area but present even in Sliema in areas funnily known as The Lazy Corner. Give priority to all the wrong things in life and always get the wrong end of the stick.