Exactly. Real buttons you can feel are the obvious correct solution and their lack shows the answer to my title is "No".
More than just adding buttons, they should be placed so that a single hand holding a device for reading can reach, feel them and operate them.
Good hardware designers would have thought about that problem and solved it.
Bad hardware designers keep churning out touch-screen-only ereaders ( and massive, thin, fragile phablet phones, but I digress ).