If I say what my occupation is it always interrupts the proceedings with requests for free advice for the lady or a relative or friend. This may distract me from the business in hand (as it literally may be in hand by then!
So I usually suggest I can tell them when we have finished. Then if I tell them later, the curious questions come thick and fast. They often tell me more about themselves at this point.
But why should I give them free advice? I am paying them. But having done their business with them, it would not be right for them to do my business with me, not professional to do that, so I suggest a colleague for them. I would often love to help but it would never work, having been close up down and dirty I cannot recruit them as clients.