NHibernate QueryOver projection into DTO... anyone know of a cleaner way?

hql_example.cs

            var orderHeaders = Session.CreateQuery(
                @"select new OrderHeader(o.OrderedOn, c.Name, e.FirstName || ' ' || e.LastName)
                    from Order o inner join o.Customer c inner join o.Employee e")
                .List<OrderHeader>();

queryover_example.cs

            Customer customer = null;
            Employee employee = null;

            var orderHeaders = Session.QueryOver<Order>()
                .JoinAlias(o => o.Customer, () => customer)
                .JoinAlias(o => o.Employee, () => employee)
                .Select(Projections.ProjectionList()
                    .Add(Projections.Property<Order>(o => o.OrderedOn))
                    .Add(Projections.Property(() => customer.Name))
                    .Add(Projections.Property(() => employee.FirstName))
                    .Add(Projections.Property(() => employee.LastName)))
                .List<Object[]>()
                // the following select is the .NET Select extension method on IEnumerable, not part of the QueryOver api
                .Select(values => new OrderHeader((DateTime)values[0], (string)values[1], (string)values[2] + " " + (string)values[3]));

I guess you can do the string concatenation in the Select().