WPF VirtualizingStackPanel support horizontal orientation?

Question

Hi all

I'm hoping to find out if UI Virtualization is supported if I set the VirtualizingStackPanel's orientation to Horizontal?

I know it works automatically for a ListBox, if I set the ScrollViewer.CanContentScroll="True", and VirtualizingStackPanel.IsVirtualizing="True" and items are scrolled vertically....

Thanks.