Test Automation using Selenium for HCM HR Quarterly patches

Summary:

We are in process of deploying the Selenium tool for Automating some of the testing on HCM HR modules. We would like to start using these automation test scripts to validate the quarterly patches on our environment.

Question:

I would like to understand if any of the other customers/organization have started using these scripts for quarterly patch validations. What's your experience and time saving from the effort's perspective and results orientated?

Any suggestions and inputs are greatly appreciated.