I'd say when it comes down to it, that's about all. There have been many more times though, when something like the following has happened.
Maybe I'm playing heads up and the count rises into solid multi-unit territory. A new player appears out of nowhere looking anxious to play and says, "Mind if I join you?" I ask him to wait 'till I lose a hand, and he obliges. Soon, he enters and bets many times the table minimum. Maybe we both win a few, and now he's betting crazy high -- and the count warrants it! Next, the dealer has an Ace up, and he Insures his hand -- dealer's got blackjack. Right after that, he's dealt 16 against a 10, and stands with it. The earmarks are there. He loses with the 16 to a pat 20. By now the count has dropped way down and he goes "all in" with a double-up or triple-up bet. He's dealt 15 against an 8 and disgustedly stands again. So much for the earmarks.
There have been a plethora of those for every real AP I've encountered.