If there's no indication from a provider that a second pop is even available (getting dressed really quick, not making any contact after the first nut, the, 'well, you can leave now' deameanor, etc) it's quite a buzzkill. Maybe that second pop isn't meant to be, but I'd rather find that out by TRYING to see if it's there rather than simply trying to get me out the door. Like DeAnn said, it's [usually] going to take some initiative from the lady. Maybe all it takes to 'restart' the guy is a little nuzzling and cudding, maybe a few seconds of kissing while laying on the bed, stroking the life back into his dick in the process. Or hell, maybe just jumping back on the dick with some bbbj does the trick. Again, it's the effort that counts, whether I pop again or not.
I've never been much of a tipper, but if I feel like your effort was there to make me feel like the king of the world, I'll fucking run to the ATM to get some tip money if I don't already have it on me (yes, I've done it before). Also, there's another 'tingle' that goes through the dick when you're trying for a second pop. I mean, the dick is feeling good from the first pop. Now it's back in the pussy (or mouth) going at it again. Now THAT'S a good feeling.
MSOG = extremely high likelihood of GREAT REVIEWS and REPEAT BUSINESS, and what provider wouldn't want that??
SSOG = you better be super freaking hot with a rate that justifies your limited menu, with a line around the corner. Odds are that line won't last once the guys in front tell the others about you.