XMLField and Destination Users

If I have a Process XmlField["Implementors"] in which I store something like
<Implementors><Implementor>K2:DEVUser1</Implementor><Implementor>K2:DEVUser2</Implementor></Implementors> where I can have 1 to n Implementor nodes, is it possible to use these data as my destination users for one of my activity?

Can you do this without resorting to code? Or do I need to go into Destination Rules Code and hack it there like so:

            XmlDocument doc = new XmlDocument();
            doc.LoadXml(K2.ProcessInstance.XmlFields["Implementors"].Value);
            XmlNodeList implementors = doc.SelectNodes("//Implementors/Implementor");

            foreach (XmlNode implementor in implementors)
            {
                K2.Destinations.Add(DestinationType.User, implementor.InnerText);
            }