Thank you kindly, Snowdrop, for a patch that solves:

The current API for MRM is quite sparse, this patch 
supplies basic support for accessing the task 
inventory of object.

OpenSim/Region/OptionalModules/Scripting/Minimodule/InventoryItem.cs

@@ -0,0 +1,72 @@
+
+using System;
+using System.Text;
+
+using OpenSim.Framework;
+using OpenSim.Region.Framework.Scenes;
+//using OpenSim.Services.AssetService;
+using OpenMetaverse;
+
+namespace OpenSim.Region.OptionalModules.Scripting.Minimodule
+{
+	
+	
+	public class InventoryItem : IInventoryItem
+	{
+		TaskInventoryItem m_privateItem;
+		Scene m_rootSceene;
+		
+		public InventoryItem(Scene rootScene, TaskInventoryItem internalItem)
+		{
+			m_rootSceene = rootScene;
+			m_privateItem = internalItem;
+		}
+
+		// Marked internal, to prevent scripts from accessing the internal type
+		internal TaskInventoryItem ToTaskInventoryItem()
+   		{
+			return m_privateItem;
+		}
+
+		/// <summary>
+		/// This will attempt to convert from an IInventoryItem to an InventoryItem object
+		/// </summary>
+		/// <description>
+		/// In order for this to work the object which implements IInventoryItem must inherit from InventoryItem, otherwise
+		/// an exception is thrown.
+		/// </description>
+		/// <param name="i">
+		/// The interface to upcast <see cref="IInventoryItem"/>
+		/// </param>
+		/// <returns>
+		/// The object backing the interface implementation <see cref="InventoryItem"/>
+		/// </returns>
+		internal static InventoryItem FromInterface(IInventoryItem i)
+   		{
+			if(typeof(InventoryItem).IsAssignableFrom(i.GetType()))
+			{
+				return (InventoryItem)i;
+			}
+			else
+			{
+				throw new ApplicationException("[MRM] There is no legal conversion from IInventoryItem to InventoryItem");
+			}
+		}
+			
+		public int Type { get { return m_privateItem.Type; } }
+		public UUID AssetID { get { return m_privateItem.AssetID; } }
+		
+		public T RetreiveAsset<T>() where T : OpenMetaverse.Asset, new()
+		{
+			AssetBase a = m_rootSceene.AssetService.Get(AssetID.ToString());
+			T result = new T();
+
+			if((sbyte)result.AssetType != a.Type)
+				throw new ApplicationException("[MRM] The supplied asset class does not match the found asset");
+			
+			result.AssetData = a.Data;
+			result.Decode();
+			return result;
+		}
+	}
+}