I'm taking the whole wait and see approach to the whole thing. Any shift in OS platform would have to be considered carefully. I'm unfortunately (or fortunately heavily invested in the Apple platform and the accouterments thereof. Meaning Logic Pro X, Final Cut Pro X and Motion 5. My Pro Tools license doesn't care about platform though I have to say it has been a more stable platform when looking at my colleagues who elected to use PCs for Pro Tools. Not that it can't be done.
I use multiple machines and a test environment as a matter of survivability as a business (Something I learned form my days as a field sales engineer in IT). When one goes down I have to have a back up to go to. I can't tell a client that I can't complete their mix or their arrangement due to some hardware issue that they really aren't going to take into consideration. It's either the work is done or its not to them.
For me it comes down to the workflow improvements that have come to Pro Tools over the last two years. It's a good sight better than it had been in previous years. And I have the portability factor that I have to consider when I take work from outside my studio and bring it in.
Still a wait and see situation though.