I have done a few real, production projects with Haskell, and I've come to realize that a lot of interest in it is hype. The paradigm is neat, the language is relatively well designed (considering that it's an academic committee language) and the implementation is passable.

Programmers sadly forget that the greatest challenge of software creation very often happens outside of your text editor: it happens in the domain, in architecture, specification and communication. If you succeed in those, your project will succeed, no matter which language* you chose. If you fail in them, no amount of strictness in your programming language will save you.

* unless of course it's Java