it is well documented in volume 3 of "the Instagram bike build guide" and episode 2 of "how to build your own crust", it was also referenced in the work of N.O. Gravelle historically
Kinda happened by accident for me. Bike is fixed and makes me want to ride like a hooligan so I need a tyre that can take skidding or tarmac as well as gravel.
Have we discussed the slick rear, knobby front tyre combo yet? I'm a fan.