I'm sure this has been discussed before, but I don't recall it anytime recently. That plus I'm too lazy to search, lol.
If you book a full hour with someone, why wouldn't that automatically be MSOG? What would be the point of doing a full hour if you might pop at the 30 minute mark? IMO, if someone pays for a full hour, they should get a full hour worth of fun. You shouldn't get booted out the door if you pop once before that hour session is over. I mention this because there was a provider recently that offered a full hour, or a half hour. Once MSOG was off the menu, I figured I could get mine in 30 minutes and be done.