Having read through the Skills section and discussed it with friends, I can't see how Advocate isn't a root with Specialities. To take a real world sense check, you can't practice law in Scotland with only a knowledge of English law. Equally, an individual trained in corporate law would not stand up to handling criminal, environmental or immigration law.
Given the standard Traveller campaign likely means running afoul of law enforcement and customs on a regular basis, transporting refugees and contraband, etc., I can't see how Advocate can get such a vague and frankly unbelievable skill compared to Art, on the very next page, that warrants seven listed Specialities!
Given the standard Traveller campaign likely means running afoul of law enforcement and customs on a regular basis, transporting refugees and contraband, etc., I can't see how Advocate can get such a vague and frankly unbelievable skill compared to Art, on the very next page, that warrants seven listed Specialities!