So glad I forced your hand! Mine are already looking fantastic with just a few days wear - you'll see lots of light and dark tones contrasting with creases and scuffs. I find that the brown overtone softens as a lighter grey emerges. Enjoy them!
While calf is never my first choice, this guidi leather is far beyond anything I've experienced. I'm wondering why I don't get a boot in one of the options. The bummer for me is the split welt - I really can't get into it. If they do some of guidi in a flat welt service boot I'd be all over it.