No, Sp/Sx is contraflow and that's not attractive to the public. Sx/Sp is synflow. That's actually how I decided on Sp/Sx over vice versa.
Synflow:
So/Sx
Sx/Sp
Sp/So
As you can see, there's only one pairing with one each. The contraflow are those inverted:
Sx/So
Sp/Sx
So/Sp
What? Who has told you contraflow is not attractive? Hahaha. That is ridiculous.
Sp/sx is attractive imo because they have this vibe "maybe i like you, maybe i dont" sneakiness, like a cat. Sx/sp is intense, but we know what we want and most people dont like when someone is too into them, especially not as fast as an sx first. Either people are attracted to us, or strongly repulsed by.
Oh, plenty of people like contraflow individuals, but they tend to be at odds with the general society more often. A lot of people think Sp/Sx are psychopaths or something but I can't vouch for that.