Therion wrote:Vitus von Atzinger wrote:http://www.thearma.org/Manuals/Gladiatoria/Gladiatoria.htm
There ya go- inverted sword used madu-style.
Inverted sword yes, "madu-style" no.
These images portray techniques from the spear/longsword/dagger judicial duel.

Note that the dude on the left is holding his inverted sword by the grip rather than by the ricasso as is usually done in the SCA-created 'Crusader style".

Inverted grip with the right hand, and yes, it looks like he's going to thrust with it. He's going for the groin, that's the only remotely vulnerable opening besides armpits and eyeslots on these harnesses.
However, I'm not arguing that an inverted grip for parrying or thrusting is not an historical style, just that it in no way translates into justification for a double-ended-stabby-thing-with-a-buckler-in-the-middle for use by armored knights.
Note that neither of these swords is being used "christian style" nor as a madu, either.
In the first one, the text says:
"Note the second technique: If he disarmed you of your spear then pull out your sword and take it in your left hand and turn the point downward. If he thrusts to you with his spear, then run in with him and grasp your sword with both hands and prevent him from reaching his sword and also try to disarm him of his spear." Gladiatoria fol 2r.
So what he's saying is to draw your sword left handed, with the point naturally down, and prepare to use it to deflect your opponent's spear thrust. Then take your sword in both hands (meaning a halfsword grip) and rush in to use it.
In the second one, the text says:
"Note the fourth technique: When he has thrown his spear at you, take your spear with full strength and thrust at him with full power.
"If he thrusts at you with full strength, then strike out his thrust with your left hand, and grab it under your left arm, hold him tight and take your sword to throw it, and throw it wherever you can best get him." Gladiatoria fol. 3r.
The first paragraph refers to the figure on the right: He is simply making a full-power spear thrust. The second paragraph is for the figure on the left: He is told to grasp his opponent's spear in his left hand, then *throw* his sword with his right hand. Yes, throw--as in, like a spear.
So, again, in neither case do we see the sword being used "christian style" or like a madu, or to rape penguins, or to drive off vampires with the cross, nor anything else.