Your Clients can be given access to an SLA report generator if it's relevant to them and if you want them to have access.
It is permission based therefore when you set up the Client User you can decide what permissions you are going to grant them under the Managing Roles section within your settings.
These are the default Roles for Clients however you can create a custom Role if you'd prefer.
The SLA report generator looks like this for a Client.
And this is a basic search result page. This can be downloaded as a CSV by the Client if required.