Not quite but really close: I'm using an A6 disc bound notebook. I keep my future log, task backlog, relevant collections (usually live projects) and the last few weeks (up to a month) in it.

And it fits in my pocket!!!

I have been seriously considering going full index card / hipster pda but find myself referring to 10+ different notes in any given week so always assumed loose-leaf would just get me lost or make a mess. How do you find it?

Btw what sort of fountain pen is that? TWSBI?