What's love got to do with it?
How on earth was the connection made between an SP on her period and loving women? I never had a problem having sex with a girlfriend on her period. With an Sp, however, there is more of a safety issue. I would feel the same way if a woman I just recently started sleeping with suddenly started bleeding.
Some purport that an SP is actually safer than a woman picked up at a bar because of safe sex practices and potential regular testing. On the other hand, nothing says that said SP doesn't have unprotected sex with her boyfriend who could potentially be infected. There are no guarantees one way or the other.
As such, I don't think I would be too pleased if and SP or recent partner (in particular an SP since that's the matter at hand) started bleeding in the middle of coital... excitment. I would be even less pleased if she had prior knowledge of impending redness, so to speak.
Are we afraid of "a little blood"? Not so much... not at all, in fact. But please, it depends on the circumstance. Some girls are very self conscious about their period and refuse to have sex during that time. Some don't mind it at all... a couple of towels to protect the sheets and mattress and away you go.
Granted, the chances of contracting anything are slim if "a little blood" is present... one can get infected even in the abscence of telltale redness. But the chance is still there, and russian roulette is best played by those with nothing to lose.
No, comparing this to a like or dislike of women is pure nonsense. Seeing an SP is risky to begin with, as much as sex with a stranger is risky. But SPs see far more men than the average stranger, hell, it's their source of income. I get nervous everytime I'm with a girl and I see blood on the condom... could be menstrual blood, could be irritation... who knows? But the bottom line is, unless I know the person I'm with is safe... I'm going to worry a little.
My opinion is that an SP who knowingly works during her menstrual cycle is not being fair to the customer. And Train has a point, no discounts are being offered, not that one should, but it is a limiting factor and hence one is getting less than one payed for.
On the other hand, I have found women in my life to be particularly naughty in the days preceding the onset of their period. But that's neither here nor there.