i feel like DA has addressed some of these issues with his recommendation of a daily checklist.
I really don't see the problem, also, with having your calendar for your hard outlines, and a seperate piece of paper for your "soft" outlines, i.e. self-imposed outlines for general contexts and project work, even if it's done on a daily basis rather than a forecasted basis (and i think this might even be better and more relevant).
also, i think it's important to generate contexts that truly fit your lifestyle. I know for me personally that i need contexts a little more specific than "at computer" and choose to create contexts, or more specifically "hats" or "roles". I haven't gotten to the point where i am sorting my lists according to the hats, but i do think it's extremely important to make sure i am blocking out time to wear those hats accordingly. Some of my hats right off the top of my head (har har) are cook, wardrobe manager, and operations manager for my small business, which of course can and i think should be broken down further into things like banking, supplies, and inventory, to name jsut a few.
i think it's really important to define these roles in your life, especially if you are like me with ADD tendencies. So a simple list of hats could be a really easy solution, and you can expand on that complexity by writing down how often you want to pay attention to those roles, etc. There were some intriguing forms at
www.powersystems.com for this kind of thing.
i think GTD is more geared towards people that have office jobs where their contexts are a little more defined, rather than entrepreneurs and homemakers, where you have to create your own defnitions...so big deal, just play make-beleive like i do and create your own multiple personalities/hats and make sure you're spending enough time in them ;-)