It will probably come down to this:
(f) For the purposes of this section, “electronic wireless communications device” includes, but is not limited to, a broadband personal communication device, a specialized mobile radio device, a handheld device or laptop computer with mobile data access, a pager, or a two-way messaging device.
Ham radios are generalized mobile radio devices, which don't fall into the description, but could fall under "not limited to". This would likely come down to officer discretion. As a RACES member, I might get some leeway, as nearly any use of the radio could fall under practice and training, if not directly part of my assigned duties. I did hear someone say, "I'd rather be a plaintiff in court than a defendant," which is probably where most of us would prefer to be. It's an uphill battle against the law and points on our license, and a distracted driving ticket is upwards of $400. A traffic court judge would likely come down on the side of bringing more money into the city/county. Also, we don't have quite as many rights against an infraction as we do against a misdemeanor or felony.
If you get one of these, go for a trial by written declaration. Make your case in writing. The officer will have to respond in writing or drop the charges, and they don't get overtime for it, as they would in court. Good luck, and I hope none of us has to test the waters of this new, poorly-written, poorly-conceived law that has just made most commercial driving operations and mobile ham radio illegal.