I find myself struggling to really feel like I've got a handle on it. I feel like I'm fighting with it rather than working with it. I often just run over to my speedlight rather than try to remember which thumb button to push to make the adjustments i need.
While I feel like I could use the camera's other functions blindfolded, I just don't have a natural knack for the flash control.
Is it something that you get used to and get lightning quick at?