It's relatively easy for Enhance to support other distributions since almost everything is containerised. However this is also means there is very little benefit to supporting other distros since very little interaction with the host o/s is required. It's likely this will happen in the future (probably Redhat derivatives and Debian) however it's not a priority at the moment.
ClearLinux I hadn't heard of until yesterday but we will keep an eye on it. I would assume their performance improvements come from kernel tuning and that might mean that it's somewhat hardware dependent.
