As funny as it may sound, I'm addicted to the bullseye lanyard tube. I've purchased several if not all of my Fiddlebacks based off how the lanyard tube pops. Weird? Yes, but that's what I'm into man. I'm really into the scales that highlight the bullseye: Tuxedo, maroon micarta, doublemint. Those configurations really make the bullseye the focal point, for me anyway. Nat canvas scales with nat canvas bullseye filler, not so much.
Functionality is a huge plus too, don't get me wrong. But I'm a very visual creature, aesthetics are uber important to me.