Although the Crusading Strikes Auto-Attack build is the much more popular of the two, the difference between them is very small, only a few percent at most. If you enjoy one playstyle considerably more than the other, then you will not be putting yourself at a severe disadvantage by choosing to play with it. Keep in mind that in order to optimally play with Crusading Strikes, you will want to track your auto-attacks in order to be able to predict your Holy Power generation.