Yes, that. Thanks Scarlet.
Carnage is a good 1-pt skill and only benefit is gaining attack rating (which we don't need since we are dex-based anyways). AH will become your main attack skill later on, but keep Carnage on hotkey for life leech since AH deals no physical damage (it won't leech without physical damage), whereas Carnage deals a pretty high amount on the %WDM. You'd be able to leech to full near instantly with it. Early game, it your main skill, and later on, it becomes a useful sustain tool.