I think it's a good idea, depending on the cost.
When I lived in Germany we had legal insurance. Any time we needed a lawyer for anything, it was covered. Seems like something just like it. Here in Michigan we have the Castle Doctrin but I keep a lawyer's number in my wallet at all times and I would make no statements to the police until I recieved his council. "Mr Policeman, I'm sure you can understand that right now I am very out of sorts. I will be glad to make a complete and full statement in 24 hours, after I have consulted with my lawyer." Remember- No matter how justified you were, Lawyer up and shut up. Even though you think you are in the right or whatever-SHUT UP. Then call your lawyer. Just my .02.