Why Choose a Lawyer-Linguist?

Why specifically choose a trained lawyer-linguist for your legal translation requirements and not just a legal translator?

Well, by way of analogy, would you trust your local GP to perform a triple by-pass if a cardiac surgeon was available?

There is absolutely no room for error in legal work of any nature. Leaving the translation of a complex legal document in the hands of somebody with no legal training can be a recipe for disaster. 

So why settle red-faced or, even worse, out of pocket for terminology blunders and misconstrued clauses by a self-professed legal translator when a qualified lawyer-linguist is available?