Oh yeah I used to use Linux until a company I worked for gave me a white Macbook. I liked it and bought a Macbook Pro. But the longer I worked with OSX the more I got annoyed. 4 years later I'm back on Linux. I didn't meant that you should change (which is why I said YMMV), but I just wanted to give another point of view of the benefits of using a tiling window manager.

A quick google search resulted in this though: https://gist.github.com/311377

If dwm is available in homebrew I guess it probably isn't that complicated to get it running in OSX.