How to use Dropbox for applications with Lion Versions support?

Question

I have several Numbers files that I sync between my laptop and desktop. I upgraded both machines to Lion and the latest version of Numbers. I love the Versions feature: many of these spreadsheets that change over time and Versions will be he very helpful.

But then I realized that Versions and Dropbox don't really interoperate effectively. Versions uses a hidden directory (.DocumentVersions-V100) at the root level to store the version history. Since that hidden directory isn't sync'd, all of the previous versions aren't available on all of the computers. I'm still experimenting, but it seems like the only way that a previous version is available is if it is explicitly opened in the application. If it has been changed (and enough time has passed since the last captured version) then it is stored in the version history.

I've thought about using some sort of Hazel rule or folder action, but there just isn't enough information at the filesystem available to make that effective.

Does anyone know if Dropbox has any plans regarding Versions? I expect that they've done some thinking about this issue.

Does anyone know how iCloud will handle this issue? Since it's native to Lion perhaps it will sync the version history as well.

Barring that, does anyone have any workarounds or best practices?