Except that kind of combo is impossible outside of Dark Souls. Sure, you can swing a greatsword one handed, they're light (around 3kg/6lbs), but after each swing, be it hit or miss, you'd make yourself open and vulnerable to any attack cause it'd have taken you too long to pick up the sword from the ground and back on your shoulder.Panorama said:If dark souls has taught me anything, Great swords are the way forward in melee, a decent shield and a secondary weapon of a bow.
EDIT:
It's a naginata - a Japanese polearm (strangely, classified as a sword).Dandark said:Though I have a special place in my heart for the Black knight halberd and other halberds similar to it, I loved seeing Whitebeard use one in One piece but I don't know the name of that type of halberd.