Considering I get more xp/hr using staff at Glacors and Abyss, which are evidently pretty different, it might be worth trying. Though saying that, it wouldn't surprise me if d/w came out on top for slayer in general when most things have little health.
E: Could just be that abyssal stuff are aggressive and group round you nicely enough to generate large overall hits.
Let me live, so when it's time to die, even the Reaper cries.