Unix for Windows

I just heard about Microsoft's Unix development environment for Windows.

http://www.microsoft.com/windows/sfu/default.asp

I was think that it might be a good cross platform development environment
for ICU applications.  I know that ICU is primarily develop on Windows an
them ported.  This might make it easier to test on Unix earlier in the
development process.

I have not tried it so I have no idea how well it works.

Carl