Since Ubuntu and Debian support signed packages, I don't see myself trying out an Ubuntu derivative that can't be bothered with this. It doesn't augur well for their attitude to security and software updates - a long way from a security-minded distro like Openwall (https://lwn.net/Articles/421540/), but that's server oriented and CentOS based.
I can't see the point of providing an RPM and DEB based distro - why not just pick one format and concentrate on features that make more of a difference?