Keep in mind that while there are many times that stone like this can be used with no issue, when we as pros give advice, it has to be with cautions when there have been many problems. How many times have you read in here that someone was advised by their contractor that he's "done it a million times" with no issues, but then that one lucky person hits the gremlin lotto, and their installation is a nightmare. You're going into it with your eyes opened. Question is do you want to roll the dice and go for it, or be safe and use a porcelain look alike?