Answering your other question, we have no plans at this moment in time on supporting any specific ARM architectures, though I won't comment on any specific ARM devices that @DataDrake and I are especially interested in that would be the most likely candidates for that support, should it ever arrive, nor what that form of Solus would even look like.
Ubuntu Budgie is free to support the ARM architecture for their own operating system (bare in mind that most of that legwork is being done by Ubuntu and Debian) and they are already responsible for the packaging of Budgie Desktop for Debian + Ubuntu (no reason for us to specifically support it, as our primary focus is Solus obviously).
The intent by them to support ARM was something I was made aware of pretty early on before they even started and announced their efforts on that, and I simply made it clear that we (Solus) currently have no official plans to support it nor will I be putting in any specific engineering efforts to ensure it runs well on any specific hardware they want to support (Solus targets modern, x86_64 devices). Both parties were on the same page and they moved ahead with supporting ARM, which I am 100% fine with.