It also seems to stretch the concept that you are not paying for sex, but for just time and whatever happens between consenting adults happens.

Isn't a bad idea when it's part of many choices. As the saying goes, when one has many things to choose from, they make many choices!

Not every guy's the same, nor their schedules, nor their bankbooks. If a lady has a lot of variety in her business (accomodates the incall/outcall; one hour/multi-hour; dinner/entertainment-dates; overnights, and tours, etc. etc.) then it also makes sense that some would offer a few choices in other services.

I once knew a very entrepreneurial young lady who started a house cleaning business that quickly went through the roof. Her idea was the first I'd ever seen: housecleaning ala carte, and she had a menu! Rather than the usual who charged by the size of the home, etc., she had a list of items and they could check off what they wanted.

Just as most ladies wouldn't dream of having half-hour appointments, I'm sure if they had someone they really liked and it was convenient for both and they said, I only have a half hour and yada yada blankety blank, I think it could be worked out.

However, advertising it, as you say, might not be a good idea.

(Slightly OT I was discussing something with a client the other day in regards to negotiating. I told him negotiating doesn't fly, but here is what I prefer my clients/prospective clients do: propose an evening and then ask what he could expect the donation to be.

A number of ladies including myself offer FBSM as an option to FS, as in Seattle at least, a significant portion of local hobbyists like having that option, some are strict FBSM only, some choose based on their mod and/current budget. When I first started offering both services (I've previously done either only one or the other) I was one of very few that offered a choice, and there were almost as many solely fbsm providers in Seattle as fs only ladies. Now a significant number of escorts have expanded their service options to include fbsm b/c as the  ecnomy decined the demand for fbsm went up, and fs bookings went down. I don't offer an in-between option, but get asked about the possibility a lot, usually in an email by a total stranger. Once we have gotten to know each other, I'm happy to accomodate a happy medium, but I can see why some ladies would respond to frequent requests with a broken down "menu", although it can seem upselling to some, at least they are straightforward and potential clients know what to expect and not pay more than they want to for a fs session if they only want such-and-such. also, quite a few men find condoms hindersome, so sensual massage is a satisfactory option for them.

I try to be a little playful with my wording, my current terminlogy being "Happy Hour" or "Ecstatic Hour"