I feel the interviewer should have asked if WHM's could wear armour similar to tanks or melee DPS, rather than asking if WHM's could wear something (implied to be) exclusive to Paladins. Like, remove the glamour restrictions on everything except Job specific gear (though do please remove the restriction on crafting gear. Some of those have very nice designs, but can only be worn by Crafters/Gatherers).

Tanks and DRG's can wear just about everything in ARR. Melee and ranged DPS can wear most things in ARR. Mages in general are very limited to mainly weaver and leather stuff (usually always in robe form).