Passing non-primitive or "Composite" type in wcf service reference method.

I'm having issues passing POCO as input parameter in a WCF service. To simplify, i've tested this with the "out of the box" item generated code and have the same issue.

When you create a wcf service the generated files are

Iservice1.cs

namespace WcfServiceLibrary2
{
    // NOTE: You can use the "Rename" command on the "Refactor" menu to change the interface name "IService1" in both code and config file together.
    [ServiceContract]
    public interface IService1
    {
        [OperationContract]
        string GetData(int value);

        [OperationContract]
        CompositeType GetDataUsingDataContract(CompositeType composite);

        // TODO: Add your service operations here
    }

    // Use a data contract as illustrated in the sample below to add composite types to service operations
    [DataContract]
    public class CompositeType
    {
        bool boolValue = true;
        string stringValue = "Hello ";

        [DataMember]
        public bool BoolValue
        {
            get { return boolValue; }
            set { boolValue = value; }
        }

        [DataMember]
        public string StringValue
        {
            get { return stringValue; }
            set { stringValue = value; }
        }
    }
}

and Servce1.cs.Text;

namespace WcfServiceLibrary2
{
    // NOTE: You can use the "Rename" command on the "Refactor" menu to change the class name "Service1" in both code and config file together.
    public class Service1 : IService1
    {
        public string GetData(int value)
        {
            return string.Format("You entered: {0}", value);
        }

        public CompositeType GetDataUsingDataContract(CompositeType composite)
        {
            if (composite == null)
            {
                throw new ArgumentNullException("composite");
            }
            if (composite.BoolValue)
            {
                composite.StringValue += "Suffix";
            }
            return composite;
        }
    }
}

When I "Add Service Reference" and use default settings, then attempt to call method in client:

CompositeType ct = new CompositeType();
            svc.GetDataUsingDataContract(ct);

I get

"The best overloaded method match for
WpfMvvmApplication1.ServiceReference1.Service1Client.GetDataUsingDataContract(WpfMvvmApplication1.ServiceReference1.CompositeType)' has some invalid arguments "

The service reference changes the explicitly declared delegate of the GetDataUsingDataContract() method from

GetDataUsingDataContract(WpfMvvmApplication1.ServiceReference1.CompositeType param)   to

GetDataUsingDataContract(WpfMvvmApplication1.ServiceReference1.Service1Client.CompositeType param)

and you cannot cast / convert one to the other. Any ideas.