If someone made a comprehensive app, that included data from various sources....I wouldn't mind if it replaced my manuals. It would be awesome to plug in my bullet type, weight, powder, and have it give you specific loads from various manuals. I'd love to have something like that for my iPad to be more specific. Plus an area for notes on each load, to track lots of loads, dates, velocities in the wild compared to what was documented. Best part about an app, is that version updates are typically free and the developer could change content of load data on the fly to account for new powders, cartridges, etc. It would always be the newest version.
A project like this could grow legs. As is evident by responses thus far, there doesn't seem to be much of a market at the moment though. As the world becomes more electronically savvy, I'm sure it will catch on. I'm actually kind of surprised that with all the kindles, ipads, sony readers, and nooks out there that the paper manuals haven't been released in electronic form yet.