Notice both of you you have the 3G. Fingerprints/smudges became a thing of the past with oleophobic coating (especially if you wear it naked in the pants pocket, which self-cleans the screen) and unless you get an oleophobic screen protector, fingerprints are actually worse on films than naked oleophobic-coated screens.
I've owned every generation. Oleophobic makes the grease worse, just easier to wipe away.