rmadison claims that it is only in sid, which is an important distinction, as current testing will soon be released as Wheezy.

A good point, though for most techies, running sid/Unstable should be alright on their desktop.

But so should testing – it does offer some stability and the remote guarantee that packages are installable, plus you get upgrades to stable for free at each release.

Then again, YMMV and everybody is probably better off making their own decision here :)