No, because Arch is a rolling release whereas you have to run Unstable and -current respectively in Debian and Slackware to be closer to the bleeding edge. But having said that, I should actually have put Void in with Arch and Gentoo.
It doesn't have to be "build everything from source", they have installs based on different stages. You can even do a binary only install if you wish. And it is rolling, so it does fit in with Arch and Void in that sense.
