What a fascinating thread! I've often wondered about the role (financial and otherwise) of pre- and post-sex time spent with SPs. Personally, any session with an SP would involve sex. If I was meeting her for lunch or dinner, without the foreknowledge or even the expectation of sex, then that may (and I underline MAY) mean that our relationship had progressed to a different level. Not all SPs are comfortable with this or receptive to it.
What is really being discussed here is what constitutes billable time. This is an issue for many professionals and others who deal with clients as part of their occupation. On one of the spectrum, it can be argued that every minute with a client is billable and that there should be strict rules, either implicit or explicit, as to what venues are appropriate for client-provider interaction. On the other hand, it can be equally argued that any "free" time spent with a client is an investment in future paid earnings. The comparison with phyisicians is obviously invalid but lawyers and other businesspeople "do lunch" all the time.
I've never been an SP (unfortunately), but if I were I would accept meals or other social invites and bill only for sex-time. I tend not to see SPs who, either on their websites or other initial communications, make a point of explicitly reminding me about how important their time is or posting ridiculous charges for small physical extras or incremental add-on times of 15 minutes. The whole impression just screams "clock-watcher." It's pretty clear, though, that Sharla is not a clock-watcher and that she makes a valid point with respect to this one particular client.
There is a limit to the number of clients an SP can see in a given day. In the same way that some physicians (or anyone else whose gross income varies proportionally with the number of client visits per day) run their clinics from 6 a.m. to 9 p.m. each day and schedule 100 patients into triple-booked sessions, SPs who view each minute of the day as potential fuck-time lost if they aren't fucking will eventually burn out and provide poor-quality service.
Again, if it were Vroomfondel the super-SP, I'd take the time to enjoy a nice meal or any other "date" activity with a client whose company I truly enjoyed. That being said, lunch time is prime sex-time for SPs who work during the day so I can agree with Sharla that it is inconsiderate to "waste" her time if no sex occurs afterwards.
Cheers,
VF