we wrote a plugin for Foreman/Katello, that integrates the SUSE Customer Center.
With it, you can simply use your SCC credentials in foreman to retrieve the list of product subscriptions for SUSE.
With a few mouse clicks, you can transfer a selected subset into Katello's content management.
The products, as well as the repositories are prepared with sensible names for you and you can immediately start syncing and using them.
For the uninterrupted user experience, we offloaded the time consuming parts onto foreman-tasks.
The plugin can be found at https://github.com/ATIX-AG/foreman_scc_manager
Matthias and the ATIX crew