Unfortunately we don't have such examle.
In the link you've posted from different component vendor - they use an image to render the text this way. However, this way you cannot select text or format it.
You can view an example of our TabStrip with vertical orientattion here.
the Telerik team
Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking
system and vote to affect the priority of the items