I've done this, and sort of got a 32 SDHC card to work with my CCK.
The problem is every 3 minutes, Photos app comes up and tries to import any photos on the SDHC card, regardless of whether I have any or not.
This is really annoying, especially while watching a video or doing anything else.
I'm surprised this issue hasn't been mentioned yet, so anyone else have the same problem? More importantly, anyone know a fix? OS 5.0.1 on iPad 2