O.k., so it appears The Church teaches that. On the other hand, I wouldn't want to risk it. Furthermore, his reward in Heaven is apparently not as great as one who's tried to live a better life. Moreover, The Church has changed its mind on issues like this in the past (like Limbo). So yeah, Salvation can be attained and maybe even Purgatory avoided, but odds are that a life lived like that will cause you to abhor The Cross and all things Holy (like Dracula). Hence, I would strongly advise against it.