How wide was the belt? Would it have been suitable for dress pants, or was it more of a military web belt width?

The narrower the belt, the less cord it will hold. I just bought 15 m (50 feet) of mil spec para cord (white) and I also recently bought the same length of cheapo orange cord. I would like to make a couple of belts; I don't have a problem cutting the orange rope short to make a dress belt, but I don't want to cut the para cord.

Slatts's web page is great and it's an ingenious belt, but there's no indication of what the width of the belt is or how much cord is needed (that I could say, anyway). Assuming the green cord is 4 mm, then it appears he is using a 2" wide buckle (this would appear to be corroborated by the metal "eraser cap" on the pencil being approx. 1/3 the width of the buckle).