No one is going to fight with the real swords :-))
But what I meant is this:
Is Aiki Ken just a form which is not useable with real katana.
Or can it bee zsed with real katana?
Another thing to reconsider is that there are many different forms of aiki-ken. Some more like traditional sword arts than other. Nishio stylists even train a aiki-version of iaido (Aiki Toho) that probably can be trained with a real katana if that´s what you´r intrested in.