Yes, your CBRS small cells can still be rewarded for POC (Proof-of-Coverage) rewards for Beacons and Witness events under PoC. Such events are prioritized by a scheme that was introduced under HIP-17, which was designed to pay higher rewards for Beacon events that are transmitted from less-covered areas, as a way to encourage Hotspot owners to deploy Hotspots in these areas and discourage deployments in areas that are already densely covered.

To learn more about PoC you can review the Helium Documentation directly.