I have them! With normal laces though. I LOVE THEM. However, and this was a disappointment, the shearling doesn't go into the foot part iyswim. So my toes still get cold.
I have had so many compliments about them. Have you tried them on?
I felt very smug on the school run last winter, was solid as a rock on the ice etc (lots of skittering mums in uggs or flat-soled knee boots complimented them) 