The Anderson and Sheppard cut is considered "London Drape" and has extra folds of cloth in the chest ("drape") and very soft shoulders. I haven't heard A&S suits called anything but "comfortable and relaxed." The iGent blogosphere often quotes Fred Astaire as saying that he did all of his dancing in A&S suits. Also, the house cuts Rubinacci and many other Neapolitan tailors are very similar style to Anderson and Sheppard. They are all descended from Frederick Scholte and his famous "London Drape."