Most of the glaives I have seen in Dun Abhon look like big boat oars: a fat double edged sword blade with a round tip covering about a third of the overall length, a third covered in incidental padding and handle on the bottom third.
Recently, I saw an Amygard glaive that was tubular instead of oar-shaped on the striking surface. Like a really long speed-stick-mace.
Are there any advantages or disadvantages of this design?