Thank you for the interest in our controls ! We are working hard towards providing full RTL support for Silverlight. I believe we can give more precise timeline after Silverlight 3 comes officaly live( expected very soon) .
Meanwhile we would be very glad if we could have a glimpse at your templates. I am quite sure they will be of great help for us . We always appreciate such kind of constructive feedback. Our past experience indicates that such kind of collaboration always gives great results and makes our controls feature set more complete and closer to the users needs.
I am very glad that you have found your own solution using tempates. In case you find any kind of trouble or missing feature stopping you , please let us know so we can help either with a workaround or with a fix.
In order to be able to attach the files, please open a support ticket. As I said i am very interested in seeing the templates.
the Telerik team