What I've Tried So Far
A painterly style is right out. Takes too long to complete one image. At that range I might put out one motion comic a year.
I looked into doing a standard comic book style with the black ink feathering look. Problem is the iPad works at 72 dpi. And although I can produce some nice painting style images it's not conducive for fine line drawing. Guess I'm used to what I used to be able to get when using my crow's quill.
There are still a few other cartoon styles to check out that don't require the fine detail feather. If I produce some usable images then that's what I'll probably go with.
And A Little Picture I Made
Here's the best of the black ink feathering work I did so far.