Im very interested in this issue. My understanding so far is that CASA will be happy (unofficially at least for now) if I have redundancy with my electronic charts. So I have an iPad with my jepps on it. Currently I carry my paper charts in my nav bag.
I'm going to talk to a few more FOI's, but if it looks like its possible, ill ditch paper all together and buy a second iPad and portable power supply and keep it in my flight bag.
Im quite keen to never have to do a paper amendment again.