New day, new app in the Cydia Store: Snappy. Snappy will allow you to access the camera at any time from any application and much faster than the native application.
All you need to do is tap and hold on the Statusbar and you will get a new applications very similar in terms of UI with the native camera application on your iPhone. The pictures you take with Snappy will be saved in the cameraroll.
You can find Snappy in the Cydia store, and it costs $1.99.