I was watching a video on porn hub yesterday and it was a dude lubing up his missus with a pair of black latex / rubber gloves getting her off and made me think of SP's not allowing fingers inside, escorts don't know where your fingers have been, got cuts or raggy nails etc but I wonder if you were to mention about wearing gloves so you can access her punany they would be more receptive.
Obviously you would have to ask her first as if you pull out a pair of rubber gloves and she is not expecting it she might think she will be on the 10pm news with police tape around her house.
You could ask but I suspect the SPs don't allow fingers inside because they've had bad experiences with SSs trying to finger bang them to orgasm.
A lot of SPs aren't actually wanting an orgasm from a booking.
Their job is to make you orgasm. Imagine being an SP and every SS wanting to finger bang you to orgasm. You're going to end up with a sore fanny and frustrated SSs as it takes more than fingering an SP to make her orgasm as a lot of SSs including me are shit at everything related to sex, so we are bound to fail 99.8923% of the time.
The SPs decline it because they just don't want to get into the situation of an SS trying to make them orgasm.
They don't want the pain or the pressure from an SS for them to orgasm. Maybe if I finger bang her harder or for another 48 minutes she'll orgasm? No, most likely she'll fake one just to get you to stop and leave her fanny alone. They don't want 10 orgasms a day.
They just want the SS to cum and be happy with the service provided and your money in return and ideally for you to return if you've been an ok booking.
Bookings are about your enjoyment not the SP shuddering in sexual ecstasy at the end. Sorry to shatter your illusions