I do have it but my ID didn't mention the risk so I assume it's non-existent. However, I would expect him to touch up on any crack which appears. You may wish to clarify with your ID if hacking would cause cracks.
Those who are interested to do a pebble wash may wish to consider that the effect might not be an even look. I'm having my foyer hacked up for the second time for a redo. This causes delays and unnecessary stress.