Calculate Linux features rolling release model of binary updates, however, it remains compatible with Gentoo source packages through Portage.
[3] The Interactive System Build allows changing the distribution and creating new ISO images.
[7] These tools offer the option to configure and update the system as well and assemble custom LiveCD images.
The project's documentation could be improved but if you're an experienced Linux user than I'm sure you'll slowly get familiar with Portage's more advanced features.
Everything "just worked" and the developers have clearly made a huge effort to make a polished operating system.