The Drexel Dry-Erase Gremlin and my copy of Puzzle Fighter, back in my possession after a one-year hiatus:

 

Scale Comparison : Bryan's copies of the Errant Story and Mac Hall books against his copy of Primer and my current preproduction notebook:

The ES book is wee and the Mac Hall book is a behemoth, both swinging into totally non-standard ends of the spectrum. I'm hoping ATC hardcopy - if it's ever available in non-Unique form - will be the target 7.5x10 I've been building pages at since I started working on the thing.

Bryan says Primer is good stuff - I'll find out for myself here in a few minutes.