Wanderer is both scout and hunter. It is before they specialise into their different roles. I use them early game to hunt down easy game animals.
Would it be possible then to disallow attacking other civs, only allowing attacks against barbs (or animals if/when we break up the barbs.) I just think that could be unfair if you could use cheap wanderers to pick off valuable gatherers essentially. If we could figure out a way to give workers combat levels that would also fix the issue.