Evening chat,
So I finally saw Ahsoka. Possibly related(!?), one of the episodes reminded me of the star wars lore regarding force-imbued blades, sith swords in particular.
If you're curious and don't care about spoilers...
TL;DR They're powerful, very difficult to craft physical blades infused with the force, some or all using kyber crystals in their construction (?The internet is unclear). They're resistant to lightsabers and just as deadly.
After all this came rushing back to me, I realized something.
The three sith-themed melee weapons we find in the KOTOR series are supposed to be Sith Swords, and yet they're treated as slightly better melee weapons.
Bioware y