Yeah, i have some felt trousers with 14STR/VIT from pld/war, but I don't like the idea of raising my jump recast timer, and AF legs do offer a pretty solid boost to both STR and PIE

Also, the caps are higher i believe for relic weapons. From my limited understanding, the caps are based on the weapon's DPS. so a raise in DPS, there is a raise in the STR/PIE caps