Hi Jeroen,
Any calls, emails, chats that are evaluated include the recording which the agent can play when they open their evaluation results. Today - if you want agents to access any of their own recordings from the Interactions view - you're correct that you would need to give them evaluator rights, setting conditions so they could only access their own recordings.
We do have future plans to add agent self-assessment, and as part of that we would include and enhancement for the option to give agents access to their own recordings.
Thanks,
Lesley