I am running with the same cane/mercy blade combo. Have both at 6+, but trying to find blood chunks to get them higher. I think I like the duel wield best. Get in close and hit R1 a few times and laugh at the combo that comes out along with your targets health!
Also try rolling forward and hitting R2, or running and hitting R2. There are other crazy moves you can do with them dual wielded, they are ridiculous cool and powerful. But for some reason I don't see many people talking about them--everyone seems to be going with STR weapons--so shhhhhh!![]()
There's actually only two real high Strength scaling weapons - the Kirkhammer (A) and Logarius' Wheel (S). Similarly there's only three high Skill scaling weapons - Blade of Mercy (S), Reiterpallasch (A), and Threaded Cane (A).
Most of everything else is split between the two with Bs, Cs, and Ds for the most part. The most "balanced" one is Ludwig's Holy Sword with B/B.