No I have not read Alloy of Law I saw that it was placed 300 years in the future on the whole Cosmere scope. I wanted to try and start on his earlier works even if there on separate planets to get an understand of the story behind the story as I went. I do plan on reading them especially with how much I loved the magic system of Allomancy. I am also a stickler for order so when I learned that there was a vague timeline with the books I decided I wanted to follow it even if the timeline does not effect any of the stories directly.