The Argos was designed for my personal fighting style. Maybe it will fit your style as well. I needed a blade that could stab well and chop well. I don't "slice" a lot, but wanted a fine cutting edge for slicing flesh along the opponent's forearms and/or to slice up the opponent if I was fighting in reverse grip with the blades along the outside of the forearm (for close quarter fighting). You will see a nice hollow-grind for this purpose along the neck of the blade. The blades also had to be heavy and robust enough to stop a blow from a crowbar swung full force at me (a common instrument used when some breaks into your house) - we used D2 tool steel for that. And I needed enough weight in the chops that contact could break bone. The belly therefore has a lenticular grind (both for weight and contacting bone without damaging the edge). Of course I also needed the tip to be pointed enough and not too wide so a thrust/stab would actually penetrate. Because I do not "trap" weapons in a fight, yet I do fight with the swords in reverse grip, the quillion is designed for flipping (yet has trapping capability). The D-Guard sports a bottom spike to help prevent an opponent's weapon from slipping under the guard (it also adds some "oomph" to a punch). The swords also sport a 2-in-1 handle to help with quick-withdrawal from a sheath. Lastly, the belly can also be used to help "pull" an opponent's weapon out of line, so that an path can be cleared for a thrust.
I worked with our designer, Jeff Modell, and came up with the Argos. My original version had straighter edges and was a bit more utilitarian, so if you like the curves, you can thank Jeff for that. He was also able to get the balance right by using grinds instead of changing the shape of the blade itself.