Ditto... C172s and a Warrior, for me.
First one (back in ~2006) was interesting. I was apparently the first SP the CFI had encountered.
"You don't have a current medical?"
"No, I'm flying as Sport Pilot, just need a BFR."
"But a 172 isn't an LSA!"
"Doesn't matter."
The CFI had to talk to his boss...but we did fly the review.
Ron Wanttaja