No. Microsoft's mistake was compromising both desktop and tablet interfaces in their attempt to create a tablet interface that desktop users (without touch screens) could use. Microsoft did this to make the app platform more enticing to developers (since tens of millions of people will buy desktops with Windows 8), because there is no way for them to match the installed based of IOS users through tablet/phone sales alone. However, their approach backfired because people don't like compromises; they want the best of both worlds.Not me, horrible idea. I like having multiple devices. iOS should stay iOS and osx should stay osx. This is the mistake MS made with the surface.
You need both interfaces, which are optimized for different uses (no compromises), but that doesn't mean you need two different devices. Of course, if you want two devices, there would be nothing stopping you from buying two devices.