Starting, gold is very important for gear. When the character have settled, grinding for stuff/exp, gold's usage is for healing potions. Bonemeals, specifically. But w/ 2 RoL wield potions aren't necessary.
Currently, I'm just grinding Hirathils, and some bats, for exp. Even when they gang up on me, deal criticals, I'll just fight/kill them and my HP will go back to full.
W/ got me thinking; Should dual-wield RoL not deal twice the lifesteal?