My INT rogue usually uses dual eGaros Malices, with eMG in offhand only when assassinating. Dual eMG when fighting bosses, but mainly for the improved deception (I usually duo so I need everything I can get for SA). Dual LitII rapiers for fire immune junk, and crafted boss beaters for bosses.
I have base 12 STR and base 18 DEX, and it's actually pretty hard to keep a higher DEX than STR because of what gear there is for STR. Rogues that use DEX-for-DMG weapons, and/or finesse, are mistaken.