NHibernate: Many-to-one IUserType

Following on from this question:

NHibernate: Lazy loading of IUserType

Seeing as I can't lazy load a property or a one-to-one relationship, is there a way I can use an IUserType with a many-to-one? Something like this (which doesn't work):

<many-to开发者_如何学JAVA-one
     name="Client" column="`ClientId`"
     lazy="true"
     type="EmployeeSystem.UserTypes.ClientUserType, EmployeeSystem" />

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Looks like NHibernate does not support custom loading (IUserType) for associations (many-to-one, one-to-one etc). As a side note, lazy loading with one-to-one is possible, but again there is no way to put the IUserType hook. I think you were on the right track with lazy properties. Update the original question with the code that shows how you load Employee.