An unfortunate and not very correct generalisation. I have certainly engaged a few escorts who turned out to be "chav slappers" (and not seen twice), but I have also had one or two whose level of education and sophistication were such that I would have been happy to be seen with them in any society - or, at least, any in which I too would be comfortable.
But then, of course, it may be that the levels of education and sophistication to which I am accustomed are somewhat less than those of willie.
My knowledge of escorts is limited to those who are "exposed" by the tabloids, and they are all fake nails, tans, hair extensions, as for so called high class hookers, these are unemployed graduates, who have invested in a matching bra and underpants.. i stick to good old sauna birds, hookers sometimes middleclass, usually chavs, who have no illusions or delusions.