I'm an i3 user too.
I like the text-based configuration, which is easy to use once you understand
that spacing matters (proper syntax).
I like the screenlocker, but supposedly it can be hacked. But as long as you
don't leave it unattended in a locked state for too long, and in an unsafe
environment, it's fine I think.
But I still need to configure it properly. I fixed many things, but I have
some left. I'm on a netinstall though.
What's nice is that it looks better (IMO) since I don't have any icon or
window border displayed. It has a very light memory use. Dmenu is fast
(though I mostly use a couple of shortcuts).
As a mouseless/touch-typing kind of environment, I really like it.
