[buntbinär]

I think both ideas fit together well.

One of the principles of GTD is to manage your work in one place, in that case OmniFocus. Think of the paper as an inbox and process it. Often, the paper is not the task but reminds you of a task. The task then belongs in OmniFocus. The paper becomes the reference material for the tasks in OF, and you need a simple filing system for that. If the paper inbox is too big, you can integrate whpalmer's suggestion to slowly make progress. Just don't let it stress you. ;)