I just tried AI Clear on several Raw format photos taken with my Sony SLT A55 camera. These were daylight pictures and of course no processing was applied (that is true of raw format). I applied basic adjustments, AI Clear and Precision detail and I found the results dramatic. AI Clear was the primary changer and it not only removed noise but brought out shadow detail and greatly improved the sharpness. Since 99% of the photos I keep are reasonably exposed, this is a huge benefit. Attached pictures are an enlarged section at 100%. The sharp one is processed with AI Clear and then Precision Detail (small amount).
One downside is the processing speed is somewhat slow. Checking my CPU and GPU performance on my Ryzen 5 2600X computer It is not even close to being fully utilized (12 threads can run at 4.2 GHz). There is some improvement needed in speed for Studio and AI Clear. For me, this is going to be a purchase.