I see in the research plan,
https://focusfusion.org/index.php/site/article/research_plan/
that experiments will be conducted with deuterium and helium.
If, heaven forbid, p-B11 doesn’t work out, might we fall back to D-D or D-He3? It wouldn’t be aneutronic, but at least it would be fusion with the DPF. That would still have advantages over the tokamak, and be years ahead.