Nhibernate join with select columns from both tables

Ok after several attempts I am stuck on this one!

I am using NHibernate with QueryOver as below. I have a Product and ProductReview as

public class Product
{
 ....
 public virtual IList<ProductReview> CustomerReviews {get;set;}
 ....
}

public class ProductReview
{
 ....
 public virtual Product Product {get;set;}
 ....
}

Mapping on Product side is

HasMany(x => x.CustomerReviews).KeyColumn("ProductId").Inverse().Cascade.None().LazyLoad();

The Query is

 Product px = null;
 ProductReview rev = null;
var result = CurrentSession
            .QueryOver<ProductReview>()
            .Where(r => r.IsActive && !r.IsDraft)
            .Select(
                Projections.Property<ProductReview>(r => r.Id).WithAlias(() => rev.Id),
                Projections.Property<ProductReview>(r => r.Title).WithAlias(() => rev.Title)
                )
            .OrderBy(r => r.ReviewDate).Desc()
            .TransformUsing(Transformers.AliasToBean<ProductReview>())
            .JoinAlias(r => r.Product, () => px)
            .Select(
               Projections.Property(() => px.UPC).WithAlias(() => px.UPC),
               Projections.Property(() => px.FullName).WithAlias(() => px.FullName)
              )
              .TransformUsing(Transformers.AliasToBean<Product>())
              .Take(5)
              .List();

The error is: The value "Reviews.Models.Product" is not of type "Reviews.Models.ProductReview" and cannot be used in this generic collection. Parameter name: value

I really do not want to create another DTO. I would like to get the list of Last 5 ne开发者_StackOverfloww reviews and have it's Product populated (only a few required fields on both entities should be filled).

Is this possible by any means (except raw sql) in NHibernate 3.0?

Product px = null;
ProductReview rev = null;

var result = CurrentSession.QueryOver<ProductReview>()
    .Where(r => r.IsActive && !r.IsDraft)
    .JoinQueryOver(r => r.Product)
    .OrderBy(r => r.ReviewDate).Desc()
    .Take(5)
    .List();