brent still keep ultramarine and sparky around?
In a sense, I do. My .ISO files are stored on my NAS server, and I never feel the need to delete old ones, because it has terabytes of free space available still.
During the Solus Troubles, I used both Sparky and one other distro (Siduction) that I had reviewed previously (as VMs) and I knew I could tolerate them for a while. Both were acceptible fallbacks, with no glaring issues, and fully supported my daily "workflow" in place of a broken Solus.
If something like that ever happens again (VERY unlikely!) I'd download the latest Sparky Linux .ISO and install that. It's about as close to a Solus distro as anything that's based on Debian can be.