one thing is specialization and another the type of armor they can use.
Warriors can't use heavy shields coz they are not specialized, like heros lower lv than 15.
I'm not trying to put anithing that should not be in him. He is a ranger, lv 27, strg above 40, so theres no rule why we couden't equip medium-wheitgh armors to them as we do with us.
By rules we sould ve aible to do it. but we have lerned that rules don't mean much for adm as they cange them everyweek as they like.