Pure vanity and the lack of full tilt range on the pads. I like a severe tilt more than the 10* fixed spacer provided for the undermount setup. I'm shallow and am stupid picky. I'll admit that and like I said, not an issue as the bike seems to be able to fit most people if willing to go in the undermount options/have a more "normalized" reach.

No matter what though, I have to give up something to obtain my ideal coordinates.