Select Items in CCK Field By Permission

Hey all. Is it possible to limit items in a select field (cck) by user role? Ie: I want a content type that has a field with 10 or so items to select (only one to select). But I want the field to only display 1-5 items depending upon the user's role. There seems to be something possible if the field is a node reference which is populated by a content type created just to make the field list. This could then be filtered by permission in a view, which is then used in the Advance-Node Reference (view). Anyway, I can't seem to wrap my head around this and my tests and attempts have failed. Thanks in advance for the assistance.