Gravelord Sword weapon combinations.

I'm considering using the GLS so i'd like to know what kinds of weapon combinations do you guys usually use together with it. I dual wield a lot so i'm exploring different options.

For me, i'd use an offhand Claw and an Estoc as a secondary.
What about you guys?

EDIT: I should just have base stats to wield the GLS and it's fine right? I don't need to pump any more since the scaling is really bad right?

yeah you don't need to pump stats for the Greavlord Sword.

I also really like the Estoc as an offhand anyhow so I think that's a wonderful idea.

what i did with my quality guy for a period of time was gravelordsword in offhand and silver tracer in the right hand for maximum toxin output. of course toxic mist and dung pies where put to use. it was quite a bit of fun, the curved greatswords swing like greatswords in the offhand, it's surprisingly quick. the downside is that you can neither block nor parry with them, so i wouldn't really advise it in the long run but since you specifically asked for dual wield options...
the best option imo would be queelags in the offhand, you don't need scaling and it does good elemental dmg for such a light/fast weapon. also you can parry with it which is worth quite a lot!