Well I said warrior cause I'm a warrior fanboy. :p
Anyway, even though your character won't get the extra damage from warrior, THF's money scavenging is probably gonna be more important to you anyway. It won't make you incredibly rich, but the extra gil does add up to extra ammo you otherwise wouldn't be able to afford.
Any serious ranger will want to level up their bow skills as fast as possible, therefore pick a job that can equipt them. Even though warriors have a lower rating and the skill cap is lower, it still counts. I'd prefer to be a RGN/WAR shooting for more damage than a RGN/THF at the same level as me. The RGN/THF however might be able to afford more ammo, and possibly a few rounds of bullets for occasional battles. However, a RGN/WAR would get a party faster since he does more damage(w/ and w/o the gun) and has taunt(can be a backup tank). A RGN/THF would hit the target more times than a RGN/WAR would... so it's kinda a tradeoff only the person at hand can decide.
While I'm going to be a melee swordsman at heart(a DRK), I will try a RGN sometime during my life. I'll get my first bow as a WAR just to play around with it, but I'll strictly be trying to level up my 1H, 2H, and Scythe skills. I don't think I'll ever buy a gun though... :sweat: