Airline ops so slightly different, but according to EU-OPS we don't have to have paper backup for our portable EFBs (which we are not allowed to use in flight below 1000ft) if we have two operational FMC. No paper documentation carried except the AFM (somehwere hidden in a closet) and no possibility to print out any maps nor can we display any plates on our ND (only on the EFBs).