So.

I don't want to deny the viability of high-freqency vibartion weapons, but as far as my knowledge goes, oscillisation in a sword causes unwanted energy loss, resulting in worse cutting ability , and the same goes for projectiles, the use of slanted armor against long-rod penetrators being a good example of how the change in trajectory induced by the vibrations will impede the projectiles power. I do understand that such high frequency vibrations won't even be visible to a naked eye, but still do belive that cutting weapons may not benefit from them.

Lets discuss?