I manage Fidelis XPS and integration with endpoint solutions. Fidelis XPS integrates directly with both Carbon Black and Bit9, giving customers a comprehensive picture of their security from the network on down to the endpoint. While there is no Splunk app, Fidelis XPS integrates well with Splunk through the export of alerts; such a deployment exists at several customers.
Please contact me (or your Fidelis account team) for more information. I can be reached at: support at fidelissecurity.com (please refer to this discussion and my name in the subject).