Many people that work offshore and on rotation do this but I've heard stories about some isolated incidents with border IO's who complain and telling to get a proper visa. I'm sure there will be some with this experience pop up and adf their take on it.
GREAT. Do one more. Many people don't know it but your 1 yr. Non-B is actually "usable" for 15 month :-) when border bouncing and not going through immigration. You CAn get another 90 days on the very last day of your Visa.