i would love that! he has unquestionably carried packages in the past with illegal contents, fully convinced that the person who sent him to pick it up would never, ever betray him by sending him on a dangerous task, so i'm sure there's an opportunity there for him to get in over his head. also, he's all for the robin hooding, and is probably happy to hook vash up with fancy weaponry provided it's only being directed at assholes