Originally Posted by josepidal
I'd like to bump this.
How formal do you think a great pair of black monks can be, say EG or Lobb Prestige?
Doesn't this answer that question (from aportnoy):
"Monks run the full gamet. Style like Oundle and Jermyn II are extremely formal and appropriate with almost any suit.
Others with broguing hand stitching are less formal but still can be worn with a variety of combinations including less formal suits."