hi,
we let the customer choose the tattooer by the portofolio either but i think a lot of people dont really see what matters. i think "artistical uneducated" people sometimes cant really judge if the tattooer can really do "their" tattoo. i let our shopguys guide the customer to the right tattooer without really recommend anybody.
i think in a busy shop with serveral tattooers you always have unsatisfied customers, and i totally agree with bart that some people dont know what a tattoo really is and should not get tattooed. these people will be unhappy either way.
if something like that happens in my shop i talk to the tattooer, the customer and take a look at the tattoo to judge who made a mistake at first.
i think the tattooer has the biggest responsibility, because he should consider to pass the customer to another artist if he is not sure if he can do the right job