Ulfberht. That is a magic sword of the viking age. The magic was in the art of making it and in the composition and purity of the steel. I think that Sui generis should be more towards this kind of exotic and magical / otherworldly materials / metals.
OR
But i have sworn to myself, not to interfer with the decision of the devs.
In the first case the game would stick to a more realistic setting and would be more honoring the craftsmanship and the ingenuity of smiths. Ulfberht was more then a sword in this times, it was a tradmark, also a sign of might and heritage, also it was a sword that was seen as the most reliable for the warrior, and yes one could say, it was viewed as it was possessing magical powers. The quality of the steel and the craftsmanship which was put into this sword, made it special.
In the second case, after i have seen the game engine over year ago, i thought that this will be one of the most intersting things, sadly i missed the kickstarter, but good that it was succesful founded. Any influence from my side could be harmful for the game. I think that it does have a celtic touch, like a tale or song of a bard. The celts did have amaizing tales of their heros. Nowadays we do not have enough things that take and develop this kind of story, instead we have to much monsters, dragons, and etc. and this monsters lose on value in this stories.
A simple hero's tale would be refreshing, and would focus on this neglected sides of RPG. Also the game engine is quite right for giving this mosters their value back, because of the realistic behavior. A werewolf with a size of 230 cm would be though his mass and size a real monster, that you have to be afraid of. A Nuckelavee, would let you shit your pants, a Banshee would mean buisness. Not the abundance of magic and non-humans make a RPG special but its scarcity. That is how i think, but this could be more harmfull than i even imagine.