I did. I bought Win 8, and it's sitting on the shelf, with Win 7 still in use some of the time, and Linux most of the time. And I hadn't used Linux for anything other than dabbling until after I bought, and experienced, Win 8.
In other words, having bought Win 8, I stopped using it and switched to Ubuntu, except for times when I explicitly need Windows, at which point, I use Win 7. The ONLY time I use W8 is when testing something for someone else that uses W8.
And yes, I am and long have been aware of Classic Shell, Start8 and about half a dozen others.
I haven't looked at the leaked stuff yet, and may well not bother, until/unless it becomes clear it's what MS will actually include in shipping versions of W9.
If, and it's definitely an "if", whatever MS come up with works for me, and that includes having my menu back, usable in the way I have and want to use it, and if the clunky aspects of MUI can be disabled (by which I mean avoid the context switching crossy referred to, and not being stuck with Fisher-Price "tiles" I don't want or need, then maybe I'll consider buying W9.
Maybe.
But frankly, MS forced me to seriously look at Ubuntu, and lo and behold, it does everything I need, short of a couple of legacy apps, which can happily stay on Win7, or in at least one case, XP. Do I need Win 8 or Win 9? No. I now can I can cope, quite comfortably, without ever needing another new MS OS for my own use, at all.
So, my forward attitude depends very much on what I think MS are up to, long-term. If it looks like W9 is seen by MS as a stepping stone to a MUI world, then they can shove it where the sun don't shine. If they intend to take us to a MUI world, but using baby steps rather than the Win8 one-big-leap, then they can shove it. If, on the other hand, this looks like a genuine reconciliation between MS and the real-world situation where lots of users just don't want their MUI world, and they are reconciled to Win9 and later allowing US, the users, to configure the UI as WE want it, then and only then will I consider it.
So if Win9 ends up as comments in this thread suggests it looks like, then crossy, I'm not the first to say it but, yup, this is how they should have done it first time. How they actually did it was, of course, a strategic and PR disaster of first order magnitude.