I see no issue with a guy wanting a quick shower after the hour is up. I worked in parlours in the past and despite them being top quality places the guy had to be undressed, satisfied, showered and redressed in the hour.
I love the freedom I have with being independent in that I have the say on wether a guy has to leave on the hour or if I allow him time after to get cleaned up. I even offer to jump in the shower with them. They really do appreciate the little things like that and I have had some old gentlemen remark that they have never had a shower with a lady before, the grin on their face tells me they like it. No naughty stuff, I just soap them up all over and invite the to do the same for me then we get rinsed off and jump out. One older guy visits me BECAUSE I jump in the shower at the end and he is old, it takes him ten mins to get dressed. You can't rush people like that.
I wouldn't dream of refusing a guy a shower just because his hour was up nowadays, it just to me personally feels a bit rude. "yes mate I know you saved up for a fortnight to pay me 130 but can you bugger off now" is how I would feel. Of course if someone is an arse or has a bit of an attitude then no, I will turn on the shower, then go back in 3 minutes to ask if they have finished. Someone would have to be really shitty for me to say "no, times up".
I am always mindful of the little things that would make a guy choose me over another girl next time he is feeling horny, its not always about how many positions you can get in during the shag, sometimes its little things such as soaping them up in the shower, not rushing the out of the door etc, you just never know unless the tell you the next time they arrive and with so many other girls out there my personal feeling is that we should be looking after the guys who book us. Its getting busy again now but that doesn't mean standards will be slipping.
Just take look through the aw pages in your locality. I was shocked when I did at mine, there used to be 4 pages behind the girls who paid to show in the local, now there are six. Everyone and her aunty, cousin, daughter and grandmother are turning to hooking and it will only increase in the future. You have to beat the competition to get the guy and the only way to keep the coming back is to treat the well, I like to treat them as friends and you wouldn't refuse a friend a shower.