It took me embarrassingly long to discover that you can remove class restrictions on any armour set by crafting it with a specific ‘rare’ material in the main slot:

• silverite (found in emprise du lion) as the main metal - heavy armour
• snouffleur leather (found in the exalted plains/emprise du lion) - medium armour
• dales wool (emprise du lion) - light armour

so for y’all clueless people like myself i thought i’d share this info on here!!