First of all, I apologize for the late reply.
The short answer to your question is : yes. It is possible.
At the moment we do not have any examples on how to do this, but it is the first thing on our to do list for developers manual. Since about two months ago we have started to update the developers manual on a weekly basis and we will provide the examples on how to do this during this month. I blog about the new topics in the developers manual at this blog : http://blogs.sitefinity.com
so you'll be able to find the announcement there once the examples are published. We generally provide examples that you can download and run on your machine, so it should be relatively simply for you to modify it once the examples are done.
I am sorry that I was not able to help you more at this time. Let us know if there is anything else we can do for you.
the Telerik team
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