Jandd does make good stuff. I had one of their daypacks for mountain biking. I checked the site, and I don't see anything that will really give me the simple attachment and ease of access that I'm hoping to find. Thanks for the recommendation, though.

ak08820, sounds like some handy work you did on the backpack. Maybe I'll need to get creative myself.

I've now started looking into top-tube bags. Those are smaller, but still might serve my needs well enough. If only I could find a waterproof one with a clear pocket on top to keep a cue-sheet while touring. That would be pretty handy.