Wow. It was in my repositories, has no silly interface buttons, and has a very short and useful man page. And indeed it's fast. I'm sold! Now, I'd like to see

Wow. It was in my repositories, has no silly interface buttons, and has a very short and useful man page. And indeed it's fast. I'm sold! Now, I'd like to see double (facing) pages. And it seems MuPDF can't do that. So I'm stuck with Okular, which is sad, as it's the only reason for me to have QT installed...