Sator, there are tailors who can make some of these garments quite fine. Usually with a modern twist. Plenty good to fit in.
Who are these tailors who you speculate make such coat for clients for wear in the real world? Have you ever made one for a client? Or your father?
Keep in mind that this style of coat went totally out of fashion around the end of the Edwardian era. I doubt that even your grandfather would have only made them as a young man, if he was in business during the Edwardian era. Even he may have never made such a dress coat.
Making ugly Nosferatu coats is easy, however, just as the Teddy Boys made it impossible to wear anything that smacked of kitsch Edwardiana in their time, making odd cuts of ancient dress coats look respectable is virtually impossible today because it will look too steam punk.