After months of lurking I've decided to post. I thought I'd make this my first. I'd like to first thank the forum for helping me find these bags. I think they really are good looking and well made, as many have observed. I do not think they are too expensive considering the level of quality.
My story is that I liked the general look of the messenger bags, but I was put off by some of the specifics of the design. So I emailed them and asked if any of these could be changed. Somewhat to my surprise, they agreed to make a bag with the modifications I suggested. So I ordered a fulton olive waxwear bag, with these changes: 1) they replaced the brass hardware with nickel 2) they removed the pockets from the sides of the bag, and 3) the removed the handle from the top of the bag. I think it was a bit of trouble for them to do this, but they did not increase the price. My impression is that they were somewhat interested in the idea and wanted to see how it all came out. I don't know if they would be willing to do something similar again.
Anyhow, I received the bag recently and I really like it. Pictures from the workshop are below. It is a large bag as it is, so I think it is better not to have the side pockets. I prefer the nickel hardware because it fits better with everything else I wear. And I definitely like it better without the handle. My feeling is that a bag should be either a briefcase or a messenger, but not try to be both. Other posters have observed that the color of this bag differs somewhat from what you see on the website. Ernest tells me that this is the result of natural variation in the manufacture of the waxed canvas. My bag is greener than the one shown on the web, but I like it. I love the waxed canvas. I think it will age nicely.
It was also my experience that Ernest and colleagues were very helpful and great to interact with. I can definitely recommend this business.