This mod replaces two-handed swords with longswords from the Witcher 2. Why 2h sword? Because they are uglier and bother me more than 1h swords. (doesn't replace swords of Arishok and Meredith). Now Fenris doesn't look like Nier. 

Used a files from The Witcher 2 DAO 

Install: Just drop the .erf and .gda files into override folder

Uninstall: Remove the files from override folder

Known issues: Lower hand floating while holding a sword because a new grips are too short

Conflicts: With all mods which contain item_variations.gda
 
Update 1.1
Removed glitch from Red Grace, and replaced the Archon Blade