The Telerik SPRadGridWebPart supports databinding to external lists and business connectivity services so it should be able to display the results from the search. The databinding can be configured through the designer of the web part by picking the external list option and specifying your service. If you need additional customization on the user interface or more control over the databinding of the grid you can use a standard RadGrid control instead which allows more options for customizations depending on your specific scenario.
More information on external list databinding in the SPRadGridWebPart can be found in this demo:
I hope this helps.
Check out the Telerik Platform - the only platform that combines a rich set of UI tools with powerful cloud services to develop web, hybrid and native mobile apps.