Is it possible to have the same items in two different MenuStrip controls, for example the main menu and a context menu?

With the entire ToolStrip family of controls we do not have an integrated commanding architecture nor do we support cloning of items to appear in multiple places. We do support reusing the same ToolStripDropDown or ContextMenuStrip in multiple places (non-nested). We understand this may require more state management and maintenance code and are looking at ways to improve this in the future.