Many, many actors (and actresses) in Asian cinema have performed as wuxia characters over the years, and I imagine that a number of them were wuxia novel fans before acting in a wuxia film/series. Do you know of any specific cases of an actor/actress in a wuxia film/series being a fan of the genre and has spoken of his/her fandom?
In some cases, it might allow an actor/actress some creative input on how the character that he/she is performing is portrayed. I don't think TVB ever allowed its actors this privilege, however. TVB tended to treat (and probably still does) its cast members as paid slaves, and they jump through whatever hoops the directors order them to. Still, one has to wonder how much knowledge of the novel character Felix Wong might have brought into depicting young Gwok Jing, Hui Juk, or Kiu Fung, or how much novel-reading might have affected Tony Leung in his portrayals of Wai Siu Bo and Cheung Mo Gei, etc.