I looking at using NHibernate for a 2 tier application and trying to get more info on sucessful strategies for binding nhibernate data model to a windows forms or wpf UI.

One question I have is how to implement the tion of referenced entities using combo boxes.
Lets say I have an object repsenting an order and it has a reference to a customer object.
I want to have a form to create an order I want to have a combo to select the customer.
To set the customer on the order object I need to set the the Customer field to an instance of a Customer object (or proxy).
So if I want to use databinding it seems I need to fill my combo with Cutomer instances or proxies.
If if I use the the full object it seems to a little heavy retreive the full details of all he customer objects from the database when the only info I use is the description to display to the user. I the "old days" you would just load the Description and CustomerId fields from the DB to populate the combo.
But I don't think I can proxies because then I won't have the description.

Is there a smarter way of doing this?
Are there any examples of nhibernate applications with .net UIs that I can download?