unless it literally is epaper i'll pass. i'm sure a tabloid sized ipad would be unwieldy.
what is the hang-up with maintaining printed book sized pages, margins, etc.? the ipad is not a book! neither is a sony reader! nor is a kindle! if you want to read a printed book, smell the paper, feel pages under your fingers, then go read a printed book.
the sooner one gives up the expectations that
any ereader is a book the more quickly they'll adapt to using a new format. besides, show me any physical book that let you change the margins or font, without some scissors and glue that is!