It is very slow. Like noticeably slow. Especially if it comes to stuff like rsync and a lot of files. If you just use vim and such you would probably not notice it as much.

Also depending on how you develop you might run into unsupported things. For example, I once tried to run IntelliJ Linux version on it through X11 Forwarding. Didn't really run perfectly.

So right now I am too afraid to develop in it because what if the real Linux acts differently? I guess you could always test it, but then why not just develop in Linux already?