This sword is amazing. The core is stiffer than many of my other swords, (it vibrates like a tuning fork if you slap it on the flat) the stiffness makes it very quick in response. You definitely need two hands for effective usage, but I would argue that the Doppelsoldner easily outclasses any sword that’s smaller that it is.
I highly recommend this weapon.
Although, I would suggest keeping the cross guard detached when in heavy use. They’re kind of expensive, and I found the bits on the sides that curl around the blade will tear off at the bead of it’s laid on the it’s side too roughly, or pulled on by another sword going through the ring.
(I would love to see a crossgaurd variant that has stronger or less flamboyant ring though)