I like the idea of the radio spot, and I think it will "wake up" a lot of people who either hadn't thought about the situation at all, or thought mistakenly that the negative ramifications of a self-defense didn't exist here in Nebraska. It won't change the antis' minds, but probably nothing short of them experiencing the problem first hand ever will.
I don't know what it cost to produce and air this spot, but I would like to see several different versions, each hilighting various aspects of the proposed legislation. Not only would they enhance the arguments for a castle doctring, but by varying the messages, people wouldn't get turned off by hearing the same spot over and over.