As far as developing B&W reversal film in Caffenol for a positive projectable image, I found this to be a good resource in terms of developing reversal with house-hold chemicals; coffee, vitamin-c, and hydrogen peroxide in place of reversal bleach. Here:
http://www.filmlabs.org/docs/citric-hydrogen-peroxide-bleach.pdf
It can take a bit of experimenting to get the concentrations and times just right, but with the above mentioned recipe and some testing of my own I've been able to get clear, consistent, B&W reversal images using a Caffenol recipe, 3% hydrogen peroxide, and lemon juice, with a normal Kodak Fixer.
Hopefully the link can help you get some results you want and are happy with, if you have the patience for doing a bit of experimenting you can definitely get some really great results, ones you wouldn't getting using standard developing methods.