I've found the simple division into notes and actions is enough and I can jump back and forth very quickly and clearly between the two of them. In addition, if you think of questions as actions, which 99% of the time they usually are (What types of tchotchkes will my boss appreciate a suitably subtle distance from bonus time?), than you're good to go. The remaining 1% of questions are usually more notes anyway (Am I ever going to be pretty?).
Like many preprinted notebooks, it's something that you could easily design yourself. But then people would think you're weird, or worse, poor. And I do find them quite fetching, especially the orange ones. Combined with a nice pen (I'm digging the new Sharpie "pens" that don't bleed through pages[2]) that clips handily into the spiral you have everything you could possibly want to build an empire. At least, that's what it feels like.
They're aren't available on Amazon with Prime or free shipping so I actually had to leave my cave and go to a Dick Blick art supply store to get them instead of dealing with some semi-anonymous online retailer.
[1] Flickr link: http://www.flickr.com/search/?q=rhodia+meeting+book
[2] They still kinda bleed through pages, but only sometimes and barely. http://amzn.to/atbrsg