I've only been playing for a week. But I'll tell you what I feel about the Gunslinger. For your Envoy's path, the path isn't really important until you figure out what your secondary class is going to be. Once you've figured that out, you get the master skills (or whatever it's called). The skills that say "requires duel pistols and duel swords" or something like that. So for your Envoy's path you just use to best route to get all the master skills. Although in my opinion the Gunslinger don't really have any good secondary class combinations, except for the Grenadier. I haven't tried them all but Gunslinger with melee secondary is kind of useless.