These tires rocked at COTA, extremely glad I got them! Day 1 I thought they were getting greasy towards the end of each session but turns out I was running them with too much pressure, backed the pressure down on day 2 and let a bit of air out between sessions and they lasted until I was ready to cool down each session. Also of note, zero issues with sidewall stiffness, these tires are plenty stiff. Then grip on these tires seems comparable to Cup 2's and they are a good bit cheaper.
We'll see about longevity but for now these are my new favorite tire!