How is this different from customer surveys?
Job surveys ask about one specific job at the point it finishes. Customer surveys — NPS and CSAT — measure the relationship over time. You want both, because a customer can be broadly happy and still have had a bad visit.
Will customers actually respond?
Response rates are much higher immediately after completion than weeks later, and higher for short surveys than long ones. Sending at completion is the single biggest factor.
What happens with a bad response?
It surfaces as a signal you can act on while the customer is still recoverable, rather than becoming a complaint or a public review. Gaffer's churn risk scoring and save plays use dissatisfaction as one input.
Does a good response get me a review?
That is the intent. Review automation asks for a public review after positive feedback, rather than asking every customer indiscriminately and collecting the bad ones too.