>>You can also create sharepoint lists that are associated with SQL data - though truthfully, if you can pull off the SharePoint to SSRS integration, that (IMO) is the way to go
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>Thank you, Kevin. I think if the customer decides to integrate my app data with a SharePoint, they will be choosing the path and doing the work. But I will "copy and paste" your suggestion to them. Of course, I will take all the credit :).
>Seriously though, this customer is currently using my app with VFP data and I am interested that they would upgrade to the SQL Server VFP application. I wrote to them that getting the data from VFP database to SharePoint is not possible (at least I don't know how).

You can create an SSRS report that points to VFP data. And then you can deploy the SSRS report to SharePoint. It's definitely a few steps but then you get the functionality of previewing SSRS inside of SharePoint.