When i think of The Porn Star Experience i do instantly think of rough sex because most porn is women being pushed around and handled roughly either through intercourse or oral. It's basically the male treating you like a whore a bit of meat and him dominating you. That is my take on it as lots of it seems to be hair pulling, spitting and women looking like they are being choked or face fucked very rougly.
I don't think dirty talk is what i would put in with porn star as such.
I would have thought if more women are allowing that and promoting that then a premium price could be charged so above average rates.
If you want more gentle clients i think it would be best to take it off the menu. I knew a couple of women that did submissive porn type bookings and they had so many rough clients and would constantly get sore throats, headaches, cut sore vagina's etc. I believe when some men see PSE they think it's a green light to be rough so it makes sense to charge more.