Currently you cannot add custom touch on ItemsControl. You will need to manually handle touch events and create gestures.
However, we are working on a touch framework (internally), that is currently implemented in some of our controls. The results with it are good and we will consider if and when we should release it to public. We cannot give you any guarantee that it will be released at all.
I am creating a PITS issue that will allow you to track the state of this task:
You can follow the PITS Issue by its ID: 14005
Here you can find the PITS Issue: Public URL
Hope this answers your question.
the Telerik team