IMHO, you can't go wrong with Filson. I have owned several waxed tin cloth coats and, for use near machines and heat, I'd say you can't do better. They do have a scent to them, but it takes me back to my grandfather's garage. I agree with buying a size up for layering. Since the original poster was a knife maker, I'll point out that Filson also made a killer work apron in a combination of materials (waxed and unwanted tin cloth) that wears like iron. The old model had straps that could be attached around each leg. The newer model is much more simplistic and not nearly as robust. As mentioned, Filson is changing and seems to becoming more 'hipster-focused.' Don't get me wrong, I'm still a Filson loyalist, but I think the older stuff is a little better.