I see no problem, im sure many women who bought mj's Venetia prior to the manhattan coming out may have eventually seen the bag in LV's mono later on and decided to go for it as well! could be a selling point! If his Venetia was a big seller for him, I am sure his idea of adding it to LV would be worth it!
keep in mind, when the manhattan gm came out, it was like $1600 so it could have been some how close in price to his version at one point in time