Fighter without armor is = stupid design. IRL everyone that could, put as much armor on, as they could. Sure, RPG are not RL, but if you want to go unarmored, dont go fighter..<br/>Monks dont have armor, and are pretty descant warriors (not just knights, but..) Think Swordwielding fighter from any Wuxian movie.. they are chinesse knights :)<br/><br/>Barbarian is in many ways better than fighter (and less armor, more hide), and still formidable in combat.<br/><br/>You could even build "warlock" to be an "unarmored" fighter.. as well as you could do same on Sorceror.. Bard would not be bad there aswell... and Rogue.. all "less armored" fighters if your going toward naked and atleast semi usefull. Fighter without armor is not useful, just an rogue, without special abilities/tricks/skills...