+1 to shortnsweet. A smart SP knows how to take on other traits to get what they want out of life.
FWIW, the description sounds a helluva lot like my future MIL, who is an ESFP. She has learned a bunch of Fe/Si behaviours, though seems to do it to show off her knowledge and savvy at 'handling' people (Se) than out of genuine Fe. She's a relatively unhealthy example though.