The only need I’ve had for one, is covered by the camera connector kit. The kit accommodates either an SD card directly, or for my CF Card camera; USB cable connect.
For any other reason, I’ve not had the need for one.
Yea, that must be it.
I’m sure the reason they chose to pass on a $.10 chip to add SD card functionality and instead sell a “camera connector kit” has nothing to do with the fact that if you could pop in a 32gig SD card it might impact sales of the “high-end” units.