Wine and Crossover are nowhere near ready for prime time.
I love the idea of both, and both can be of great use to hobbyists and enthusiasts. But as a mainstream mechanism for running Windows apps in Linux? No freaking way. I know how to troubleshoot issues with these systems, and even I simply lack the patience. Someone without the background knowledge would just be frustrated beyond all belief. At the end of the day, it's easier to run Windows as a VM if there are Windows apps that you simply can't get away from (or Windows on bare metal / dual boot for gaming).
That being said, for users who simply need a consistent look-and-feel and aren't hopelessly married to apps like Outlook and Visio (for example), this looks like an interesting project. Ironically enough, Microsoft's constant monkeying with their app UX has made transitions to alternatives like LibreOffice much more palatable. But promising or even suggesting Windows compatibility will likely backfire horribly in the market they're trying to enter.
Biting the hand that feeds IT
