So at first try, Chroma Flash doesn't seem bad, but unfortunately the prompt adherence is not the same. This is similar to the result you'd get on V48 for this.
https://files.catbox.moe/g8eg26.png
https://files.catbox.moe/gq9dnj.png

Do note that v1 Flash HD is more slopped at lower res, the lower you go to 1024 and that is very visible in the first catbox. Good news is going up in res does not hurt its improved coherence/performance. But it's still not as strong at prompt following as OG Chroma.

But if exact prompt precision is not necessary it seems good.