Garments should definitely be for STR, primarily glaivers. Glaive moves tend to cost alot of MP and Garment reduces the MP requirement by a set %. At high levels, skills may cost 1k - 2k MP where a STR Glaivers max MP may be around 4k. This could be a hassle especially when that "NOT ENOUGH MP" comes while when your skills are used faster than ur pots can heal mp. As melee damagers, the garment speed bonus as well as grasswalk and phantom walk make grinding a breeze. The moment you kill one monster, you can phantom (if you have it) towards one monster and walk the remaining distance in a mere second which can improve your grinding.
STR meant to be a tanker, even in garments. They can last well without armor. Glaives have passive HP+, Bladers have Shields. In PVP Armor is useful only if you are fighting a STR and in wars, you will deal with both INT and STR and you'll die faster in armor from nukes than in garment from strs.
Also, it makes running away a breeze
