To add to that, the digg exodus didn't happen overnight. The digg staff were doing almost the exact same things that Reddit is doing now but in neither case did people just suddenly stop using the website. It's a slow trickle, not a flash flood because millions of different people with varying degrees of interest in the drama are using the website. It was the same case for Digg.
That said, I still have some Reddit tabs open but there could be a point in the future where I won't even think of Reddit and will either go directly to Voat or Snapzu.
Honestly, it depends on what subreddits you belongs to and how long it takes the rest of the community. I know that until /r/taiwan starts moving to /t/taiwan on Snapzu or /v/taiwan on Voat, I'm going to be keeping at least one Reddit tab open. There are a few others I am subbed to that have not made a real transition elsewhere, yet.