Having used `php public/index.php` often, I _do_ find it cumbersome, and also have noted that developers seeing me use it are often surprised that it even exists. As such, I'm now swayed that a "zf" or "bin/zf" would be useful.

Being a long time \*nix user, I'm quite accustomed to the `bin` directory. That said, not all users today are, and there's a lot to be said for discoverability. As such, `./zf` makes a lot of sense to me.