We have been running in a little bit of an issue. We have tried adding a binding to the report itself for culture to be linked to parameter but it wont change the culture of the report. We can set the binding on individual text boxes and it works fine. The other issue is from what we have found is that the culture of the report is supposed to be defaulted to the what the locale is for the computer that is running the report and we have a few international customers that are reporting that is not working.
Telerik Reporting Report Globalization - Telerik Reporting