I like question mark kicks, I like them a lot. Since early on it was a staple in my game. The best way to become effective with it is to find several different avenues to the attack. Low kick, teep, oblique kick (chasse italien) and more can set up that deceptive head kick.
Someone needs to do an analysis on the way the Kung Fu Panda movies use old-fashioned vs. modern language ("Panda we meet at last"/"Hey how's it going") and old-fashioned vs. modern settings (forbidden-city-esque palaces/modern-ish Chinese restaurant) to indicate class differences in their characters, and how those class differences create underlying tensions and misunderstandings.