Wondering what people think of this: (from the gentoo weekly newsletter).
I have been reading some articles and opinions and it seems as though often the primary reasons for users choosing gentoo, debian etc is because they are not rpm based - due to 'underlying problems inherent in this procedure.'
Portage 2.1 will adopt the RPM format for all packages moving forward. The use of ebuilds will be deprecated in favor of the defacto RPM standard. The primary driver for this decision was to ensure compliance with the Linux Standard Base specification, which mandates RPM support for package management.