The awesome Rokenze changed up the cat school armor to give Geralt a wearable version of Letho's clothing. He was kind enough to give me the raw mesh files so that I could turn it into an original DLC set. I've given each item the stats of the mastercrafted cat school equivalents and they are Medium Armor items that allow for a total of 7 glyph enhancements. Enjoy.

Add the items to your inventory with the following console commands:

additem('Rogue Witcher Armor') 
additem('Rogue Witcher Pants') 
additem('Rogue Witcher Gloves') 
additem('Rogue Witcher Boots') 

The outfit is not set up for NG+. If someone wants to tweak it to allow for NG+, please feel free to do so, send me the file and I will add it here.

With special thanks to ScoutBr0 for solving a problem.