ConnectLeader (CL) Click Dialer is used primarily, perhaps exclusively, by the SDR team in my company. I don't see it being as useful in other departments or roles, but it's certainly a time-saver. The reason it's more impactful on my team is because we each make a high volume of calls every day, so the time it saves us adds up and proves to be rather substantial.
I use CL Click Dialer in my role as an SDR. It's an extremely useful tool, allowing me to make calls to different people without having to dial. It's a big time-saver and seamlessly integrates with the CRM system we use. Without a tool like CL Click Dialer, I would certainly be less efficient and therefore less successful in my role. Every SDR team or team that makes a high volume of calls on a daily basis should implement something like CL Click Dialer. Rarely have there been any problems and the overall user-experience is rather intuitive.