Looking at the background packages in The Book of Judgement I find a couple to be somewhat… odd. Specifically the Sibellus Scrounger and the Underhive Merchant packages (p 40). The respective special abilities of these packages almost seem reversed to me. I would think the scrounger more apt to be able to salvage materials (such as ammunition from a weapon jam) where as the merchant would know where to find goods for sale, thus making them more readily available. I don't know. Perhaps I'm over analyzing these particular packages.
Also, and less concerning, why not simply call the package Scrounger as opposed to Sibellus Scrounger? Not like there's a monopoly on the need and skills.